WO2018135666A1 - Spout - Google Patents
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- Publication number
- WO2018135666A1 WO2018135666A1 PCT/JP2018/001957 JP2018001957W WO2018135666A1 WO 2018135666 A1 WO2018135666 A1 WO 2018135666A1 JP 2018001957 W JP2018001957 W JP 2018001957W WO 2018135666 A1 WO2018135666 A1 WO 2018135666A1
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- WO
- WIPO (PCT)
- Prior art keywords
- repellent member
- liquid repellent
- liquid
- opening
- tool according
- Prior art date
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D47/00—Closures with filling and discharging, or with discharging, devices
- B65D47/04—Closures with discharging devices other than pumps
- B65D47/06—Closures with discharging devices other than pumps with pouring spouts or tubes; with discharge nozzles or passages
- B65D47/18—Closures with discharging devices other than pumps with pouring spouts or tubes; with discharge nozzles or passages for discharging drops; Droppers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D47/00—Closures with filling and discharging, or with discharging, devices
- B65D47/40—Closures with filling and discharging, or with discharging, devices with drip catchers or drip-preventing means
Definitions
- the present invention relates to a pouring tool.
- the device in a pouring container for storing seasonings such as soy sauce, sauce, dressing, etc., the device has been devised to improve the drainage when pouring out the content liquid and prevent dripping.
- a spout lip that is expanded outward and curved on the periphery of the upper end of an inner stopper attached to the mouth of a container body as a pouring tool (see, for example, Patent Document 1).
- Patent Document 2 a thin layer made of a low surface energy substance having water repellency is laminated on the surface of a fine first concavo-convex shape on the order of several tens of microns to contain fine particles (colloidal silica).
- a second concavo-convex shape having a surface roughness smaller than the first concavo-convex shape on the surface of the layer, it is possible to achieve super water repellency with a contact angle with water of 150 degrees or more.
- the present inventors apply a technique for increasing liquid contact repellency by increasing the contact angle of the liquid droplets as disclosed in Patent Documents 2 and 3, thereby improving the falling property of the liquid droplets. Therefore, intensive studies have been made to provide a pouring tool with excellent liquid drainage.
- the present invention has been made in view of the circumstances as described above, and an object thereof is to provide a pouring tool that can easily provide liquid repellency around the opening from which the content liquid is poured.
- a liquid repellent member is attached to at least a part of the periphery of the opening from which the content liquid is poured, and at least a part of the periphery of the opening is formed by the liquid repellent member. It is as a configuration.
- the liquid repellent member is attached around the opening from which the content liquid is poured, and at least a part of the periphery of the opening is formed by the liquid repellent member. Liquidity can be imparted.
- FIG. 3 is an explanatory diagram schematically showing a contact pattern of droplets on the surface of the liquid repellent member shown in FIG. 2 using a Cassie-Baxter model and a Wenzel model.
- FIG. 3 is an explanatory diagram schematically showing a contact pattern of droplets on the surface of the liquid repellent member shown in FIG. 2 using a Cassie-Baxter model and a Wenzel model.
- it is explanatory drawing which shows typically the other example of the rough surface formed in the surface of a liquid repellent member.
- FIG. 10 is an explanatory diagram schematically showing a contact pattern of droplets on the surface of the liquid repellent member shown in FIG. 9 using a Cassie-Baxter model and a Wenzel model. It is explanatory drawing which shows typically the state of the droplet in an example of the nozzle under a droplet which concerns on embodiment of this invention. It is explanatory drawing which shows the dispersion
- the pouring tool 101 shown in FIG. 1 includes an inner tube portion 103 and an outer tube portion 104 that hang concentrically with a spout portion 102 that serves as a spout for the content liquid stored in a container body (not shown). Used as an inner plug at the mouth of the container body.
- FIG. 1 is a half sectional view combining a front view and a longitudinal sectional view of the dispensing tool according to the present embodiment.
- the inner cylindrical portion 103 When the pouring tool 101 is attached to the mouth portion of the container body, the inner cylindrical portion 103 is in close contact with the inner peripheral surface of the mouth portion of the container body.
- the annular fitting portion 140 formed along the circumferential direction on the inner peripheral surface on the lower end side of the outer cylindrical portion 104 is fitted with the fitting portion formed on the outer peripheral surface side of the mouth portion of the container body. It is designed to be liquid-tightly attached to the mouth of the container body by a stopper.
- the extraction tool 101 is provided with an annular protrusion 110 that comes into contact with the top surface of the mouth of the container body so that the extraction tool 101 can be attached to the mouth of the container body in a more liquid-tight manner.
- the spout part 102 has a cylindrical main part 121 that rises in a cylindrical shape, and an opening part 102a through which the content liquid is poured out is provided on the inner peripheral side thereof.
- the sealing partition 120 is provided in the inner peripheral side of the base part, and it can open now by tearing the sealing partition 120 from the notch (score) 120a formed cyclically
- the pouring tool 101 that is used as an inner plug attached to the mouth portion of the container main body is the periphery of the opening portion 102 a provided in the pouring port portion 102, that is, the top surface side of the pouring port portion 102.
- the portion is formed by a liquid repellent member 122 to which liquid repellency is imparted.
- the liquid repellent member 122 is made of a non-fluorine resin, and fluorine atoms are incorporated in the molecular chain of the non-fluorine resin that forms the surface of the liquid repellent member 122.
- a molecular chain of a non-fluorine resin is represented by — (CH 2 ) n—
- a fluorine atom is incorporated into a part of the molecular chain, and a fluorine-containing moiety such as —CHF— or —CF 2 — is generated.
- the surface of the liquid repellent member 122 is fluorinated.
- Incorporation into the molecular chain of the non-fluorine resin forming the surface of the liquid repellent member 122 can be performed by etching using fluorine plasma.
- fluorine plasma atomic fluorine
- the surface of the liquid repellent member 122 is disposed between a pair of electrodes, and a high frequency electric field is applied.
- fluorine atom plasma atomic fluorine
- the fluorine atoms are molecules of the non-fluorine resin forming the surface of the liquid repellent member 122. Incorporated into the chain.
- the resin on the surface is vaporized or decomposed, and at the same time, fluorine atoms are incorporated. Accordingly, ultra fine irregularities are formed by etching in the region where fluorine atoms are incorporated.
- the arithmetic average roughness Ra of the ultra-fine irregularities is generally 100 nm or less and Ra / RSm ⁇ 5 ⁇ 10 ⁇ 3 .
- the surface of the liquid repellent member 122 can be roughened so that a fine uneven shape is formed as required (see FIG. 2).
- a stamper on which a rough surface corresponding to a desired uneven shape is formed by a resist method or the like is heated to an appropriate temperature, and this is pressed against the surface of the liquid repellent member 122 to transfer the rough surface.
- the surface of the member 122 can be roughened.
- an auxiliary uneven shape sRS smaller than the uneven shape may be formed on at least a part of the surface of the fine uneven shape (see FIG. 4).
- the surface structure of the liquid repellent member 122 is relatively large.
- the surface of the liquid repellent member 122 can be roughened so as to have an uneven shape and a relatively small auxiliary uneven shape sRS formed on the surface.
- the non-fluorine resin used for the liquid repellent member 122 can be roughened by forming an uneven shape on the surface of the liquid repellent member 122, and fluorine atoms can be removed by fluorine plasma etching.
- Any thermoplastic resin, thermosetting resin, photocurable resin, and the like can be used as long as the incorporation into the molecular chain is possible.
- polyethylene, polypropylene, ethylene, or an olefin resin typified by a copolymer of propylene and another olefin, or a polyester such as polyethylene terephthalate (PET), polyethylene isophthalate, or polyethylene naphthalate is preferably used.
- FIG. 2 shows an example of a rough surface formed on the surface of the liquid repellent member 122 in the present embodiment.
- the surface of the liquid repellent member 122 is formed with a rough surface RS having a fine concavo-convex shape (in FIG. 2, the top of the convex portion in the rough surface RS is indicated by S).
- Fluorine atoms are incorporated in the molecular chain of the non-fluorine resin forming the rough surface RS.
- the contact pattern of the droplet Du on the rough surface RS as described above is such that the concave portion in the rough surface RS is air in the Cassie mode in which the droplet Du is placed on the rough surface RS. It is a pocket, and the droplet Du is in a composite contact state between the solid and the gas (air).
- the contact radius R at the contact interface of the droplet Du is small, the adhesion between the droplet Du and the rough surface is low, and the liquid comes into contact with the air having the highest lyophobic property. Sex is expressed.
- the contact angle of the rough surface RS in the Cassie mode is as shown in the following theoretical formula (1).
- ⁇ E contact angle
- ⁇ * apparent contact angle
- ⁇ S area ratio (projected area of solid-liquid interface per unit area)
- the liquid repellency is improved in both the Wenzel mode and the Cassie mode, but the adhesion between the rough surface RS and the droplet Du is improved.
- the Cassie mode since the interface is small, the adhesion force that must be overcome when the droplets Du fall is low, and the droplets can easily fall and repeatedly fall over again.
- fluorine is contained in the molecular chain of the non-fluorine resin forming the rough surface RS of the liquid repellent member 122.
- liquid repellency is imparted chemically. That is, if the liquid enters the concave portion in the rough surface RS, the contact pattern of the droplet Du becomes the Wenzel mode. As a result, the super-liquid repellency by the Cassie mode is impaired.
- the liquid repellency can be chemically imparted to the rough surface RS, and thereby into the recess.
- the penetration of the liquid is effectively suppressed, and the super liquid repellency by the Cassie mode is stably maintained.
- the chemical liquid repellency is expressed in the molecular chain of the non-fluorine resin forming this surface.
- the fluorine atom is incorporated.
- the fluorine atoms are not removed and the chemical liquid repellency is stably maintained.
- the super liquid repellency by the Cassie mode is maintained. Without being lowered, the high level is maintained as in the initial stage.
- a fluorine atom is incorporated into the molecular chain of the non-fluorine resin on the surface instead of forming a film containing fluorine atoms, there is no problem of contamination due to peeling or dropping.
- the degree of the concavo-convex shape of the rough surface RS is expressed by the area of the convex top S per unit area in the rough surface RS so that the liquid repellency by the Cassie mode is sufficiently exhibited.
- the area ratio ⁇ s is in the range of 0.05 or more, preferably 0.08 or more. Further, from the viewpoint of moldability and mechanical strength, the area ratio ⁇ s is preferably 0.8 or less, particularly preferably 0.5 or less.
- the depth d in the rough surface RS is preferably in the range of 5 to 200 ⁇ m, particularly 10 to 50 ⁇ m.
- the rough surface formed on the surface of the liquid repellent member 122 is not limited to the uneven shape of the rough surface RS shown in FIG. 2, but from the viewpoint of stably forming the air pocket, FIG. It is preferable that the convex part and the concave part as shown are formed in a rectangular shape. For example, if the recess has a V-shaped form, the droplet Du can easily enter the recess. Further, in order to more effectively suppress the intrusion of the liquid droplet Du into the concave-convex concave portion of the rough surface RS, as shown in FIG. It is preferable to form an auxiliary uneven shape sRS smaller than the uneven shape.
- the surface of the liquid repellent member 122 is preferably fluorinated and roughened in order to improve the liquid repellency. However, if the surface of the liquid repellent member 122 is at least fluorinated, the surface is repellent. Liquid performance can be demonstrated.
- the plasma treatment for fluorinating the surface of the liquid repellent member 122 is very strong in attack, and fine irregularities are formed on the surface of the liquid repellent member 122 by the plasma treatment. Roughened. Therefore, the surface of the liquid repellent member 122 only needs to be at least fluorinated, and may be any surface that further roughens the surface of the liquid repellent member 122 as necessary.
- annular liquid repellent member 122 having an overhanging portion 122 a that protrudes outward with respect to the outer peripheral surface of the cylindrical main portion 121 is formed in a cylindrical shape at the spout portion 102 of the extraction tool 101. It is attached to the opening edge of the cylindrical main part 121 that rises.
- the inner diameter of the liquid repellent member 122 formed in an annular shape is the same as the inner diameter of the cylindrical main portion 121 so that the inner peripheral surface of the liquid repellent member 122 is flush with the inner peripheral surface of the cylindrical main portion 121. It is the diameter.
- upper surface side of the spout part 102 is comprised by the liquid repellent member 122 over the perimeter. Further, on the inner peripheral surface side of the liquid repellent member 122, the opening side edge portion of the cylindrical main portion 121 is cut out along the circumferential direction, and the opening side edge portion of the cylindrical main portion 121 is cut. An engagement step portion 122b is formed to be engaged with the liquid repellent member 122 so that the liquid repellent member 122 is joined in an engaged state with the opening side edge portion of the cylindrical main portion 121 at a portion excluding the overhang portion 122a. I have to.
- the liquid repellent member 122 In order to attach the liquid repellent member 122 to the spout portion 102 of the dispensing tool 101, it may be attached by appropriate means such as ultrasonic fusion, thermal fusion, adhesive, fitting, etc., or may be removable. Further, for example, as shown in FIG. 5, the liquid repellent member 122 may be disposed as an insert material in a mold and attached by molding the extraction tool 101 by in-mold molding. 5 shows the structure of the main part of the mold for molding the portion surrounded by the chain line in FIG. 1 when the liquid repellent member 122 is placed in the mold as an insert material and the pouring tool 101 is molded in-mold. It is explanatory drawing shown.
- the liquid repellent member 122 is joined to the opening side edge of the cylindrical main part 121 by joining the liquid repellent member 122 to the opening side edge of the cylindrical main part 121 at a portion other than the overhanging part 122a.
- the injection resin pressure is applied to the inner peripheral surface side portion (engagement step portion 122b) of the liquid repellent member 122, it is possible to prevent the injection resin pressure from being applied to the overhang portion 122a. Thereby, it is possible to prevent the uneven shape of the rough surface RS of the liquid repellent member 122 from being crushed at least in the overhanging portion 122a, so that the liquid repellency is not impaired.
- the liquid repellent member 122 is a member smaller than the pouring tool 101, the transport efficiency during fluorination / roughening can be improved, the processing apparatus can be downsized, and the number that can be fluorinated / roughened simultaneously. It can also be increased.
- the lyophobic member 122 can be produced by punching a film-like or sheet-like base material and then punching it. Therefore, by attaching the liquid repellent member 122 to the spout portion 102 so that the top surface side portion of the spout portion 102 is formed by the liquid repellent member 122, the spout serving as the spout for the content liquid is formed. Liquid repellency can be easily imparted to the portion 102.
- a liquid repellent member is attached to the spout portion, and at least a part of the top surface side of the spout portion is a liquid repellent member.
- a pouring tool according to the first embodiment of the present invention uses, for example, soy sauce, sauces, dressings and other seasonings, detergents, cosmetics and other chemicals as the content liquid, and pours such content liquid with good liquidity.
- the engagement step portion 122b formed by cutting out the thickness of the opening side edge portion of the cylindrical main portion 121 is formed on the inner peripheral surface side of the liquid repellent member 122.
- the liquid member 122 is joined in a state where the liquid member 122 is engaged with the opening-side edge portion of the cylindrical main portion 121 at a portion other than the overhang portion 122a, but is not limited thereto.
- the liquid repellent member 122 may be joined to the opening side edge of the cylindrical main portion 121.
- the opening-side edge portion of the cylindrical main portion 121 is notched obliquely along the circumferential direction, and is formed in a tapered shape that is inclined downward toward the outer peripheral surface side.
- a tapered curved surface portion 122 c that abuts on the opening side edge of the cylindrical main portion 121 is formed on the inner peripheral surface side of the liquid repellent member 122.
- FIG. 7A is a one-side cross-sectional view of the present modified example, and in this modified example, the liquid repellent member 122 is placed in a mold as an insert material, and the pouring tool 101 is in-mold molded.
- FIG. 7B shows the structure of the main part of the mold for molding the portion surrounded by the chain line in FIG.
- the resin pressure P applied to the tapered curved surface portion 122c of the liquid repellent member 122 and its component force during in-mold molding are indicated by arrows, and the opening side of the cylindrical main portion 121 formed in a tapered shape.
- the gradient of the edge portion is indicated by ⁇
- the force to press the liquid repellent member 122 against the cavity surface is attenuated to P ⁇ cos ⁇ . Therefore, according to this modification, although the injection resin pressure is applied to the inner peripheral surface side portion (tapered curved surface portion 122c) of the liquid repellent member 122 joined to the opening side edge of the cylindrical main portion 121, The force that tries to press the part against the cavity surface can be attenuated. As a result, it is possible to suppress the concavo-convex shape of the rough surface RS of the liquid repellent member 122 from being crushed even in the portion excluding the overhanging portion 122a. Can be kept intact.
- the top surface side portion of the spout portion 102 is formed by the annular liquid repellent member 122 over the entire circumference, but the present invention is not limited to this.
- the pouring tool 101 has a form in which a lid for sealing the pouring part 102 is connected via a hinge part. The content liquid is poured out from the side opposite to the side to which the lid is connected.
- the liquid repellent member 122 is attached to a portion through which at least the content liquid of the spout portion 102 passes and including the top surface thereof.
- At least a part of the top surface side of the spout portion 102 can be formed by the liquid repellent member 122.
- the spout part 102 has the cylindrical main part 121 which stands
- the pouring tool according to the present embodiment can be suitably used as a nozzle of various containers or apparatuses, and liquid can be dripped little by little. It is what.
- an eye drop container or the like is provided with a nozzle at a dispensing portion so that a liquid (eye drop) in the container can be dropped little by little.
- the human eye usually has a volume for holding about 20 ⁇ L of tear fluid, but with a conventional eye dropper nozzle, the drop volume of one drop is generally about 30-40 ⁇ L.
- the drop volume of one drop is generally about 30-40 ⁇ L.
- a drop of one drop is provided by providing a needle portion having an outer diameter of 0.5 mm or more and 2.5 mm or less at the tip of a dispensing nozzle for dropping an ophthalmic solution from a container.
- An “eye drop container” has been proposed that can have an amount of about 5 to 25 ⁇ L.
- the amount of dripping is intended to be reduced by providing a fine needle part at the tip of the nozzle, but the nodule part itself is repellent.
- the nodule part itself is repellent.
- a fine needle of 0.5 to 2.5 mm has a fear that it may be pierced into the eye because the tip of the needle looks very sharp for a user who is instilling. Even with such a fine needle, the amount of dripping is limited to about 10 ⁇ L at most, and it cannot be said that the amount of dripping is small enough.
- FIG. 8 is an explanatory view showing an example in which the dispensing tool according to the present embodiment is applied to a lower droplet nozzle of an eye drop container, (a) is a sectional view of the whole eye drop container, and (b) is a view (a). It is an expanded sectional view of the tip portion of the nozzle shown.
- the droplet lowering nozzle to which the dispensing tool according to the present embodiment is applied constitutes a nozzle 210 serving as a spout for an eye drop container 201 for eye drops.
- the eye drop container 201 includes a container main body 202 that can store and store a liquid serving as an eye drop therein, and a liquid that protrudes from substantially the center of the upper surface of the container main body 202 (the bottom surface when using the drop).
- a nozzle 210 serving as a spout is provided.
- the container main body 202 and the nozzle 210 communicate with each other, and the eye drops stored in the container main body 202 are poured out and dripped from the opening 210a of the nozzle 210 to the outside of the container.
- a cap (not shown) is detachably attached to the container body 202 including the nozzle 210.
- the nozzle 210 is covered with the cap, the inside of the container body 202 is sealed, and the nozzle 210 is sealed.
- the tip of can be protected.
- the nozzle 210 is formed separately from the container main body 202, and is inserted and fitted into a nozzle mounting protrusion formed at the mouth of the container main body 202, so that the container main body 202 is inserted. And the eye drop container 201 are formed.
- the nozzle 210 is formed in a cylindrical shape or a rectangular tube shape, for example, and communicates with the liquid storage space of the container body 202. Then, liquid is poured out and dropped from the inside of the container body 202 through the opening 210 a of the cylindrical nozzle 210.
- the liquid repellent member 211 is attached to the front end side where the opening 210 a of the nozzle 210 opens, and the liquid repellent member 211 constitutes at least a part of the front end of the nozzle 210. ing.
- the liquid repellent member 211 is made of a non-fluorine resin, and fluorine atoms are incorporated in the molecular chain of the non-fluorine resin that forms the surface of the liquid repellent member 211.
- a molecular chain of a non-fluorine resin is represented by — (CH 2 ) n—
- a fluorine atom is incorporated into a part of the molecular chain, and a fluorine-containing moiety such as —CHF— or —CF 2 — is generated.
- the surface of the liquid repellent member 211 is fluorinated.
- Incorporation into the molecular chain of the non-fluorine resin forming the surface of the liquid repellent member 211 can be performed by etching using fluorine plasma.
- fluorine plasma atomic fluorine
- the fluorine atom plasma is generated and collided with the surface of the liquid repellent member 211, so that the fluorine atoms are molecular chains of the non-fluorine resin forming the surface of the liquid repellent member 211.
- the resin on the surface is vaporized or decomposed, and at the same time, fluorine atoms are incorporated. Accordingly, ultra fine irregularities are formed by etching in the region where fluorine atoms are incorporated.
- the arithmetic average roughness Ra of the ultra-fine irregularities is generally 100 nm or less and Ra / RSm ⁇ 5 ⁇ 10 ⁇ 3 .
- the surface of the liquid repellent member 211 can be roughened so that fine irregularities are formed as necessary.
- a liquid repellent member is formed by heating a stamper on which a rough surface portion corresponding to desired unevenness by a resist method or the like is heated to an appropriate temperature, and pressing this against the surface of the liquid repellent member 211 to transfer the rough surface portion.
- the surface of 211 can be roughened.
- non-fluorine-based resin used for the liquid repellent member 211 that is, a resin not containing fluorine
- an uneven portion can be formed on the surface of the liquid repellent member 211 to be roughened, and fluorine atoms can be removed by fluorine plasma etching.
- Any thermoplastic resin, thermosetting resin, photocurable resin, and the like can be used as long as the incorporation into the molecular chain is possible.
- polyethylene, polypropylene, ethylene, or an olefin resin typified by a copolymer of propylene and another olefin, or a polyester such as polyethylene terephthalate (PET), polyethylene isophthalate, or polyethylene naphthalate is preferably used.
- FIGS. 9 and 10 the operation principle of the liquid repellent member 211 in the present embodiment will be described with reference to FIGS. 9 and 10.
- the form of the rough surface formed on the surface of the liquid repellent member 211 is shown in FIG.
- the surface of the liquid repellent member 211 is formed with a rough surface RS composed of fine irregularities (in FIG. 9, the top of the convex portion in the rough surface RS is indicated by S), Fluorine atoms are incorporated in the molecular chain of the non-fluorinated resin that forms the rough surface RS.
- the contact pattern of the droplet Du on the rough surface RS as described above is such that in the Cassie mode in which the droplet Du is placed on the rough surface RS, the recesses in the rough surface RS are air. It is a pocket, and the droplet Du is in a composite contact state between the solid and the gas (air). In such a composite contact, the contact radius R at the contact interface of the droplet Du is small, the adhesion between the droplet Du and the rough surface is low, and the liquid comes into contact with the air having the highest lyophobic property. Sex is expressed.
- the contact angle of the rough surface RS in the Cassie mode is as shown in the following theoretical formula (1).
- ⁇ E contact angle
- ⁇ * apparent contact angle
- ⁇ S area ratio (projected area of solid-liquid interface per unit area)
- the liquid repellency is improved in both the Wenzel mode and the Cassie mode, but the adhesion between the rough surface RS and the droplet Du is improved.
- the Cassie mode since the interface is small, the adhesion force that must be overcome when the droplet Du is dropped is low, and the droplet is easily dropped and tumbled.
- the molecular chain of the non-fluorine resin forming the rough surface RS of the tip portion 211 of the nozzle 210 is used. Incorporation of fluorine atoms into the liquid provides chemical liquid repellency. That is, if the liquid enters the concave portion in the rough surface RS, the contact pattern of the droplet Du becomes the Wenzel mode. As a result, the super-liquid repellency by the Cassie mode is impaired.
- the liquid repellency can be chemically imparted to the rough surface RS, and thereby into the recess.
- the penetration of the liquid is effectively suppressed, and the super liquid repellency by the Cassie mode is stably maintained.
- the chemical liquid repellency is expressed in the molecular chain of the non-fluorine resin forming this surface.
- the fluorine atom is incorporated.
- the fluorine atoms are not removed and the chemical liquid repellency is stably maintained.
- the super liquid repellency by the Cassie mode is maintained. Without being lowered, the high level is maintained as in the initial stage.
- a fluorine atom is incorporated into the molecular chain of the non-fluorine resin on the surface instead of forming a film containing fluorine atoms, there is no problem of contamination due to peeling or dropping.
- the degree of unevenness of the rough surface RS as described above is represented by the area of the convex portion top S per unit area in the rough surface RS so that the liquid repellency by the Cassie mode is sufficiently exhibited.
- the area ratio ⁇ s is 0.05 or more, preferably 0.08 or more.
- the area ratio ⁇ is preferably in the range of 0.8 or less, particularly 0.5 or less.
- the depth d in the rough surface RS is preferably in the range of 5 to 200 ⁇ m, particularly 10 to 50 ⁇ m.
- the rough surface formed on the surface of the liquid repellent member 211 is not limited to the uneven shape of the rough surface RS shown in FIG. 9, but from the viewpoint of stably forming the air pockets, FIG. It is preferable that the convex part and the concave part as shown are formed in a rectangular shape. For example, if the recess has a V-shaped form, the droplet Du can easily enter the recess. Further, it is preferable that the surface of the liquid repellent member 211 is fluorinated and the surface of the tip end portion 211 is roughened in order to improve the liquid repellency, but the surface of the liquid repellent member 211 is at least If fluorinated, liquid repellency can be exhibited.
- the plasma treatment for fluorinating the surface of the liquid repellent member 211 is very strong in attack, and fine irregularities are formed on the surface of the liquid repellent member 211 by the plasma treatment. Roughened. Therefore, the surface of the liquid repellent member 211 only needs to be at least fluorinated, and may be any surface that further roughens the surface of the tip portion 211 as necessary.
- a liquid repellent member 211 having an opening 211 a drilled in the same diameter and the same axis as the opening 210 a of the nozzle 210 is attached to the tip side of the nozzle 210.
- the tip of the nozzle 210 is configured.
- the liquid repellent member 211 may be attached by forming the nozzle 210 by in-mold molding using the insert material as an insert material, ultrasonic fusion, thermal fusion, It may be attached by appropriate means such as an adhesive or fitting, or may be removable.
- the liquid repellent member 211 is a member smaller than the nozzle 210, the conveyance efficiency during fluorination / roughening can be improved, the processing apparatus can be downsized, and the number of fluorinated / roughening at the same time can be increased. You can also.
- the lyophobic member 211 can be manufactured by punching a film-like or sheet-like base material and then punching it. Therefore, by attaching the liquid repellent member 211 to the tip end side of the nozzle 210 so that the tip end portion of the nozzle 210 is constituted by the liquid repellent member 211, the liquid repellency of the nozzle tip portion can be easily improved. it can.
- the liquid (eye drops) poured out from the container body 202 is prevented from getting wet to the tip of the nozzle 210 over a wide range, and the liquid poured out from the nozzle 210 is adjusted and set in the inner diameter of the opening 210a.
- the dripping amount of can be arbitrarily set. That is, as shown in FIG. 11, the liquid droplets Du poured out from the nozzle 210 with improved liquid repellency at the tip end are substantially spherical without spreading over the nozzle tip. Then, at the timing when the weight of the droplet Du exceeds the adhesion force between the droplet Du and the nozzle tip, the droplet Du separates from the nozzle surface and falls and drops.
- the droplets Du are not wet and spread, the adhesion is small, and the amount of droplets Du dropped is small. Moreover, by setting the inner diameter of the opening 210a of the nozzle 210 to a predetermined dimension (for example, 0.5 mm or less), a desired amount (for example, 10 ⁇ L or less) of the droplet Du can be poured out and dropped.
- a predetermined dimension for example, 0.5 mm or less
- FIG. 12 is an explanatory diagram schematically showing variation in the amount of dripping.
- the droplet Du dropped from the nozzle 210 has a spherical shape at the center of the opening at the tip of the nozzle, and is detached from the tip of the nozzle when the droplet Du reaches a certain weight. Will drop and drip.
- the liquid droplet Du ejected from the nozzle 210 moves to a lower liquid repellency side, for example, as shown in FIG.
- the state is deviated from the center of the nozzle opening.
- the amount of the dropped droplet is also larger than in the original normal case.
- so-called air entrapment in which bubbles are generated and mixed in the liquid, may occur.
- the liquid droplet Du discharged from the nozzle 210 is separated into a plurality of liquid droplets Du having different liquid amounts as shown in FIG. 12B, for example.
- the droplets Du may be dropped individually or integrally, resulting in a drop amount different from the original normal case.
- the tip surface of the nozzle 210 is divided into two types (two steps): a first surface located on the nozzle center side and a second surface continuous to the outer peripheral side of the first surface.
- the first surface and the second surface can have different surface free energies, that is, the second surface can have a higher liquid repellency than the first surface.
- the liquid repellency for example, when a target liquid (such as water) is placed on a horizontal mounting surface, a “contact angle” that is an angle formed by a tangent line between the mounting surface and the liquid surface is ⁇ E. In this case, if ⁇ E ⁇ 90 °, the mounting surface is “high” (low energy surface) for the target liquid, and if ⁇ E ⁇ 90 °, the liquid repellency The property is “low” (high energy surface).
- a protrusion 210b that protrudes along the periphery of the opening 210a of the nozzle 210 is formed, and an opening 211a is formed with the same diameter and the same diameter as the outer diameter of the protrusion 210b.
- the liquid member 211 is attached to the front end side of the nozzle 210 so as to be arranged around the protrusion 210b, and the liquid repellent member 211 constitutes a part of the front end portion of the nozzle 210. (See FIG. 13B).
- the tip surface of the protrusion 210b can be the first surface S1 positioned on the nozzle center side, and can be a high energy surface with low liquid repellency.
- the surface of the liquid repellent member 211 that has been fluorinated and roughened is defined as a second surface S2 that is continuous to the outer peripheral side of the first surface, and a surface having a surface free energy lower than that of the first surface S1 (repellency). Low energy surface with high liquidity).
- the liquid droplet is always guided to be formed at the center of the opening of the nozzle 210, and the liquid is surely and stably dispensed and dropped without causing any deviation or dispersion of the liquid droplet. Can be made.
- the liquid repellent member 211 When the content liquid stored in the container main body 202 is dropped, the content liquid is dropped by pressing the container main body 202 to increase its internal pressure. However, as shown in FIG.
- the liquid member 211 is attached to the nozzle 210, the liquid repellent member 211 does not directly receive the internal pressure, so that the liquid repellent member 211 can be prevented from being detached due to an increase in internal pressure. Also, in order to prevent detachment more firmly, even when the liquid repellent member 211 is attached to the nozzle 210 via an adhesive, the adhesive interface and the content extraction path can be isolated, so that the adhesive Contamination can be completely prevented.
- the fitting part 211 may be provided in the nozzle 210 so as to be removable, and the liquid repellent member may be replaceable.
- a liquid repellent member is attached to the tip side of the droplet lowering nozzle, and at least the tip of the droplet lowering nozzle is formed by the liquid repellent member.
- a dispensing tool according to the second embodiment of the present invention can be suitably used as a droplet lower nozzle of an eye drop container, but is not limited to the above-described embodiment, and the present invention. It goes without saying that various modifications can be made within the range described above.
- the eye drop container for eye drops is described as an example of the application target of the dispensing tool according to the present invention.
- the application target of the present invention is not limited to the eye drop container. That is, various liquids can be mounted on a spout part of a container or device that is desired to be dripped by a predetermined amount, and the dripping amount can be reduced.
- liquid repellent member whose surface is fluorinated and roughened to impart liquid repellency
- the liquid repellent member is not limited to this.
- liquid repellency may be imparted by applying a liquid repellency substance such as silicone oil to the surface, or liquid repellency by attaching hydrophobic oxide fine particles such as hydrophobic silica to the surface. The thing to which the property was provided may be sufficient.
- the liquid repellent member by forming the liquid repellent member with a fluorine-based resin such as polytetrafluoroethylene, the surface thereof can exhibit liquid repellency.
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Abstract
At least a part of the periphery of an opening (102a, 210a), through which a content liquid in a spout (101, 210) is spouted, is formed by a liquid-repellent member (122, 211) by attaching the liquid-repellent member (122, 211) to at least a part of the periphery of the opening (102a, 210a), and hence liquid repellency can be easily provided to the periphery of the opening (102a, 210a) through which the content liquid is spouted.
Description
本発明は、注出具に関する。
The present invention relates to a pouring tool.
従来、醤油、ソース、ドレッシング等の調味料類を収納する注出容器にあっては、内容液を注ぎ出す際の液切れ性を向上させて、液だれを防止する工夫が施されてきた。例えば、注出具として容器本体の口部に取り付けられる中栓の上端周縁に、外方に拡開され湾曲する注出口唇部を形成することが知られている(例えば、特許文献1参照)。
Conventionally, in a pouring container for storing seasonings such as soy sauce, sauce, dressing, etc., the device has been devised to improve the drainage when pouring out the content liquid and prevent dripping. For example, it is known to form a spout lip that is expanded outward and curved on the periphery of the upper end of an inner stopper attached to the mouth of a container body as a pouring tool (see, for example, Patent Document 1).
また、近年では、微細な凹凸構造による撥液性を利用する様々な技術が提案されている。例えば、特許文献2では、数十ミクロンオーダーの微細な第1の凹凸形状の表面に、撥水性を有する低表面エネルギー物質からなる薄層を積層し、微粒子(コロイダルシリカ)を含有させた当該薄層の表面に第1の凹凸形状よりも小さい表面粗さの第2の凹凸形状が形成されるようにすることで、水との接触角が150度以上の超撥水性が達成可能とされている(特許文献2の[0021]参照)。
In recent years, various techniques using liquid repellency due to a fine uneven structure have been proposed. For example, in Patent Document 2, a thin layer made of a low surface energy substance having water repellency is laminated on the surface of a fine first concavo-convex shape on the order of several tens of microns to contain fine particles (colloidal silica). By forming the second concavo-convex shape having a surface roughness smaller than the first concavo-convex shape on the surface of the layer, it is possible to achieve super water repellency with a contact angle with water of 150 degrees or more. (See [0021] of Patent Document 2).
また、液滴の接触角を大きくして撥液性を付与する技術としては、内容物と接触する面に疎水性酸化物微粒子を付着させることも知られている。例えば、特許文献3によれば、包装材料の最外面に疎水性酸化物微粒子を付着させることで、純水の接触角が150度以上を示すとされている(特許文献3の[0051]参照)。
Also, as a technique for imparting liquid repellency by increasing the contact angle of droplets, it is also known to attach hydrophobic oxide fine particles to the surface in contact with the contents. For example, according to Patent Document 3, it is said that the contact angle of pure water shows 150 degrees or more by attaching hydrophobic oxide fine particles to the outermost surface of the packaging material (see [0051] of Patent Document 3). ).
ところで、特許文献1の注出容器のように、中栓の上端周縁に、外方に拡開され湾曲する注出口唇部を形成したものでは、使用している間に、液切れ性が低下し、液だれが発生する場合があった。そして、液だれした内容液の一部が中栓やキャップに付着し固化すると、清潔感を損ね、使用者に不快感を与えてしまうため、液だれを防止する技術の確立が要望されていた。
By the way, in the case where a spout lip portion that is expanded outward and curved is formed on the upper end periphery of the inner plug as in the spout container of Patent Document 1, the liquid breakage is reduced during use. However, dripping may occur. And, since a part of the dripping content liquid adheres to the inner plug or cap and solidifies, it impairs cleanliness and makes the user uncomfortable. Therefore, establishment of technology for preventing dripping has been demanded. .
そこで、本発明者らは、特許文献2,3に開示されているような、液滴の接触角を大きくして撥液性を付与する技術を適用し、液滴に対する転落性を高めることによって、液切れ性に優れた注出具を提供すべく鋭意検討を重ねてきた。
Therefore, the present inventors apply a technique for increasing liquid contact repellency by increasing the contact angle of the liquid droplets as disclosed in Patent Documents 2 and 3, thereby improving the falling property of the liquid droplets. Therefore, intensive studies have been made to provide a pouring tool with excellent liquid drainage.
しかしながら、特許文献1の注出容器が備える中栓などの注出具に対して、撥液性を付与する加工を直接施したのでは、そのハンドリングに煩雑な工程が強いられ、生産性よく加工を施すには限界があるという知見を得るに至った。
また、特許文献2,3に開示された技術のように、微粒子を用いて撥液性を付与しようとした場合には、かかる微粒子の脱落による異物混入の問題が容易に想起される。 However, when the processing for imparting liquid repellency is directly applied to the pouring tool such as the inner stopper provided in the pouring container ofPatent Document 1, the handling is complicated and the processing is performed with high productivity. It came to the knowledge that there was a limit in applying.
In addition, as in the techniques disclosed in Patent Documents 2 and 3, when trying to impart liquid repellency using fine particles, the problem of contamination by foreign matters due to the removal of such fine particles is easily recalled.
また、特許文献2,3に開示された技術のように、微粒子を用いて撥液性を付与しようとした場合には、かかる微粒子の脱落による異物混入の問題が容易に想起される。 However, when the processing for imparting liquid repellency is directly applied to the pouring tool such as the inner stopper provided in the pouring container of
In addition, as in the techniques disclosed in Patent Documents 2 and 3, when trying to impart liquid repellency using fine particles, the problem of contamination by foreign matters due to the removal of such fine particles is easily recalled.
本発明は、上記したような事情に鑑みてなされたものであり、内容液が注出される開口部の周囲に簡便に撥液性を付与することを可能とした注出具を提供することを目的とする。
The present invention has been made in view of the circumstances as described above, and an object thereof is to provide a pouring tool that can easily provide liquid repellency around the opening from which the content liquid is poured. And
本発明に係る注出具は、内容液が注出される開口部の周囲の少なくとも一部に、撥液部材が取り付けられており、前記開口部の周囲の少なくとも一部が、前記撥液部材によって形成されている構成としてある。
In the pouring tool according to the present invention, a liquid repellent member is attached to at least a part of the periphery of the opening from which the content liquid is poured, and at least a part of the periphery of the opening is formed by the liquid repellent member. It is as a configuration.
本発明によれば、内容液が注出される開口部の周囲に撥液部材を取り付けて、当該開口部の周囲の少なくとも一部が撥液部材によって形成されるようにすることで、簡便に撥液性を付与することができる。
According to the present invention, the liquid repellent member is attached around the opening from which the content liquid is poured, and at least a part of the periphery of the opening is formed by the liquid repellent member. Liquidity can be imparted.
以下、本発明に係る注出具の実施形態について、図面を参照しつつ説明する。
Hereinafter, an embodiment of a dispensing tool according to the present invention will be described with reference to the drawings.
[第一実施形態]
まず、本発明に係る注出具の第一実施形態について説明する。 [First embodiment]
First, a first embodiment of the dispensing tool according to the present invention will be described.
まず、本発明に係る注出具の第一実施形態について説明する。 [First embodiment]
First, a first embodiment of the dispensing tool according to the present invention will be described.
[注出具]
図1に示す注出具101は、図示しない容器本体に貯蔵された内容液の注ぎ口となる注出口部102とともに、同心状に垂下する内側筒部103と外側筒部104とを備えており、当該容器本体の口部に、中栓として取り付けて使用される。
なお、図1は、本実施形態に係る注出具の正面図と縦断面図とを組み合わせた片側断面図である。 [Pouring tool]
Thepouring tool 101 shown in FIG. 1 includes an inner tube portion 103 and an outer tube portion 104 that hang concentrically with a spout portion 102 that serves as a spout for the content liquid stored in a container body (not shown). Used as an inner plug at the mouth of the container body.
FIG. 1 is a half sectional view combining a front view and a longitudinal sectional view of the dispensing tool according to the present embodiment.
図1に示す注出具101は、図示しない容器本体に貯蔵された内容液の注ぎ口となる注出口部102とともに、同心状に垂下する内側筒部103と外側筒部104とを備えており、当該容器本体の口部に、中栓として取り付けて使用される。
なお、図1は、本実施形態に係る注出具の正面図と縦断面図とを組み合わせた片側断面図である。 [Pouring tool]
The
FIG. 1 is a half sectional view combining a front view and a longitudinal sectional view of the dispensing tool according to the present embodiment.
注出具101は、容器本体の口部に取り付けた際に、内側筒部103が容器本体の口部内周面に密着する。これとともに、外側筒部104の下端側内周面に周方向に沿って形成された環状の嵌合部140が、容器本体の口部外周面側に形成された嵌合部と嵌合するようになっており、打栓によって容器本体の口部に液密に取り付けられるようにしてある。さらに、より液密に容器本体の口部に注出具101を取り付けることができるように、注出具101には、容器本体の口部天面に当接する環状の突起110を設けてある。
When the pouring tool 101 is attached to the mouth portion of the container body, the inner cylindrical portion 103 is in close contact with the inner peripheral surface of the mouth portion of the container body. At the same time, the annular fitting portion 140 formed along the circumferential direction on the inner peripheral surface on the lower end side of the outer cylindrical portion 104 is fitted with the fitting portion formed on the outer peripheral surface side of the mouth portion of the container body. It is designed to be liquid-tightly attached to the mouth of the container body by a stopper. Furthermore, the extraction tool 101 is provided with an annular protrusion 110 that comes into contact with the top surface of the mouth of the container body so that the extraction tool 101 can be attached to the mouth of the container body in a more liquid-tight manner.
また、注出口部102は、円筒状に立ち上る筒状主部121を有し、内容液が注出される開口部102aが、その内周側に設けられている。そして、その基部の内周側には封止隔壁120が設けられており、周方向に沿って環状に形成された切り込み(スコア)120aから封止隔壁120を切り裂くことによって開封できるようになっている。開封後、容器本体を傾けることで、容器本体に貯蔵された内容液は、注出口部102を通して容器外部に注ぎ出される(図6参照)。
Further, the spout part 102 has a cylindrical main part 121 that rises in a cylindrical shape, and an opening part 102a through which the content liquid is poured out is provided on the inner peripheral side thereof. And the sealing partition 120 is provided in the inner peripheral side of the base part, and it can open now by tearing the sealing partition 120 from the notch (score) 120a formed cyclically | annularly along the circumferential direction. Yes. After opening, the content liquid stored in the container body is poured out through the spout portion 102 by tilting the container body (see FIG. 6).
本実施形態において、容器本体の口部に中栓として取り付けて使用される注出具101は、その注出口部102に設けられた開口部102aの周囲、すなわち、注出口部102の天面側の部分が、撥液性が付与された撥液部材122によって形成されている。
In the present embodiment, the pouring tool 101 that is used as an inner plug attached to the mouth portion of the container main body is the periphery of the opening portion 102 a provided in the pouring port portion 102, that is, the top surface side of the pouring port portion 102. The portion is formed by a liquid repellent member 122 to which liquid repellency is imparted.
[撥液部材]
本実施形態において、撥液部材122は、非フッ素系樹脂からなり、撥液部材122の表面を形成する非フッ素系樹脂の分子鎖中に、フッ素原子が組み込まれている。例えば、非フッ素系樹脂の分子鎖を-(CH2)n-で表すと、この分子鎖の一部にフッ素原子が組み込まれ、例えば-CHF-或いは-CF2-などの含フッ素部分が生成されて、撥液部材122の表面がフッ素化されるようにしている。 [Liquid repellent material]
In the present embodiment, theliquid repellent member 122 is made of a non-fluorine resin, and fluorine atoms are incorporated in the molecular chain of the non-fluorine resin that forms the surface of the liquid repellent member 122. For example, when a molecular chain of a non-fluorine resin is represented by — (CH 2 ) n—, a fluorine atom is incorporated into a part of the molecular chain, and a fluorine-containing moiety such as —CHF— or —CF 2 — is generated. Thus, the surface of the liquid repellent member 122 is fluorinated.
本実施形態において、撥液部材122は、非フッ素系樹脂からなり、撥液部材122の表面を形成する非フッ素系樹脂の分子鎖中に、フッ素原子が組み込まれている。例えば、非フッ素系樹脂の分子鎖を-(CH2)n-で表すと、この分子鎖の一部にフッ素原子が組み込まれ、例えば-CHF-或いは-CF2-などの含フッ素部分が生成されて、撥液部材122の表面がフッ素化されるようにしている。 [Liquid repellent material]
In the present embodiment, the
撥液部材122の表面を形成する非フッ素系樹脂の分子鎖中への組み込みは、フッ素プラズマを用いたエッチングにより行うことができる。例えば、CF4ガスやSiF4ガスなどを使用し、撥液部材122(フッ素化前の撥液部材122を形成する基材)の表面を、一対の電極間に配置し、高周波電界を印加することにより、フッ素原子のプラズマ(原子状フッ素)を生成させ、これを撥液部材122の表面に衝突させることによって、フッ素原子は撥液部材122の表面を形成している非フッ素系樹脂の分子鎖中に組み込まれる。すなわち、表面の樹脂が気化乃至分解し、同時に、フッ素原子が組み込まれることとなる。
従って、フッ素原子が組み込まれている領域には、エッチングにより、超微細な凹凸が形成されることとなる。この超微細な凹凸での算術平均粗さRaは、一般に、100nm以下であり、Ra/RSm≧5×10-3である。 Incorporation into the molecular chain of the non-fluorine resin forming the surface of theliquid repellent member 122 can be performed by etching using fluorine plasma. For example, CF 4 gas, SiF 4 gas, or the like is used, the surface of the liquid repellent member 122 (the base material on which the liquid repellent member 122 before fluorination is formed) is disposed between a pair of electrodes, and a high frequency electric field is applied. Thus, fluorine atom plasma (atomic fluorine) is generated and collided with the surface of the liquid repellent member 122, so that the fluorine atoms are molecules of the non-fluorine resin forming the surface of the liquid repellent member 122. Incorporated into the chain. That is, the resin on the surface is vaporized or decomposed, and at the same time, fluorine atoms are incorporated.
Accordingly, ultra fine irregularities are formed by etching in the region where fluorine atoms are incorporated. The arithmetic average roughness Ra of the ultra-fine irregularities is generally 100 nm or less and Ra / RSm ≧ 5 × 10 −3 .
従って、フッ素原子が組み込まれている領域には、エッチングにより、超微細な凹凸が形成されることとなる。この超微細な凹凸での算術平均粗さRaは、一般に、100nm以下であり、Ra/RSm≧5×10-3である。 Incorporation into the molecular chain of the non-fluorine resin forming the surface of the
Accordingly, ultra fine irregularities are formed by etching in the region where fluorine atoms are incorporated. The arithmetic average roughness Ra of the ultra-fine irregularities is generally 100 nm or less and Ra / RSm ≧ 5 × 10 −3 .
また、撥液部材122の表面は、必要に応じて微細な凹凸形状が形成されるように粗面化することができる(図2参照)。例えば、レジスト法等により所望の凹凸形状に対応する粗面部が形成されたスタンパを適宜の温度に加熱し、これを撥液部材122の表面に押し当てて粗面部を転写することにより、撥液部材122の表面を粗面化することができる。
Further, the surface of the liquid repellent member 122 can be roughened so that a fine uneven shape is formed as required (see FIG. 2). For example, a stamper on which a rough surface corresponding to a desired uneven shape is formed by a resist method or the like is heated to an appropriate temperature, and this is pressed against the surface of the liquid repellent member 122 to transfer the rough surface. The surface of the member 122 can be roughened.
撥液部材122の表面を粗面化するにあたっては、微細な凹凸形状の表面の少なくとも一部に、当該凹凸形状より小さな補助用凹凸形状sRSが形成されるようにしてもよい(図4参照)。例えば、微細な凹凸形状が形成されたスタンパに、ブラスト処理などによってさらに微細な凹凸形状を形成しておき、これらを転写するようにすれば、撥液部材122の表面構造が、相対的に大きい凹凸形状と、その表面に形成された相対的に小さい補助用凹凸形状sRSとを有するように、撥液部材122の表面を粗面化することができる。
In roughening the surface of the liquid repellent member 122, an auxiliary uneven shape sRS smaller than the uneven shape may be formed on at least a part of the surface of the fine uneven shape (see FIG. 4). . For example, if a finer concavo-convex shape is formed on a stamper in which a fine concavo-convex shape is formed by blasting or the like and transferred, the surface structure of the liquid repellent member 122 is relatively large. The surface of the liquid repellent member 122 can be roughened so as to have an uneven shape and a relatively small auxiliary uneven shape sRS formed on the surface.
撥液部材122に用いる非フッ素系樹脂、すなわち、フッ素を含有していない樹脂としては、撥液部材122の表面に凹凸形状を形成して粗面化でき、かつ、フッ素プラズマエッチングによりフッ素原子の分子鎖中への組み込みが可能である限り、任意の熱可塑性樹脂、熱硬化性樹脂、光硬化性樹脂などを挙げることができる。例えば、ポリエチレン、ポリプロピレン、エチレン、又はプロピレンと他のオレフィンとの共重合体等に代表されるオレフィン系樹脂、ポリエチレンテレフタレート(PET)、ポリエチレンイソフタレート、ポリエチレンナフタレート等のポリエステルが好ましく用いられる。
The non-fluorine resin used for the liquid repellent member 122, that is, a resin not containing fluorine, can be roughened by forming an uneven shape on the surface of the liquid repellent member 122, and fluorine atoms can be removed by fluorine plasma etching. Any thermoplastic resin, thermosetting resin, photocurable resin, and the like can be used as long as the incorporation into the molecular chain is possible. For example, polyethylene, polypropylene, ethylene, or an olefin resin typified by a copolymer of propylene and another olefin, or a polyester such as polyethylene terephthalate (PET), polyethylene isophthalate, or polyethylene naphthalate is preferably used.
[撥液部材の動作原理]
以下、本実施形態における撥液部材122の動作原理について、図2及び図3を参照しつつ説明する。
本実施形態において、撥液部材122の表面に形成される粗面の一例を図2に示す。同図において、撥液部材122の表面には、微細な凹凸形状からなる粗面RSが形成されているとともに(図2において、粗面RS中の凸部の頂部はSで示されている)、この粗面RSを形成する非フッ素系樹脂の分子鎖中には、フッ素原子が組み込まれている。 [Operation principle of liquid repellent member]
Hereinafter, the operation principle of theliquid repellent member 122 in the present embodiment will be described with reference to FIGS.
FIG. 2 shows an example of a rough surface formed on the surface of theliquid repellent member 122 in the present embodiment. In the figure, the surface of the liquid repellent member 122 is formed with a rough surface RS having a fine concavo-convex shape (in FIG. 2, the top of the convex portion in the rough surface RS is indicated by S). Fluorine atoms are incorporated in the molecular chain of the non-fluorine resin forming the rough surface RS.
以下、本実施形態における撥液部材122の動作原理について、図2及び図3を参照しつつ説明する。
本実施形態において、撥液部材122の表面に形成される粗面の一例を図2に示す。同図において、撥液部材122の表面には、微細な凹凸形状からなる粗面RSが形成されているとともに(図2において、粗面RS中の凸部の頂部はSで示されている)、この粗面RSを形成する非フッ素系樹脂の分子鎖中には、フッ素原子が組み込まれている。 [Operation principle of liquid repellent member]
Hereinafter, the operation principle of the
FIG. 2 shows an example of a rough surface formed on the surface of the
上記のような粗面RSでの液滴Duの撥液性について、図3を参照して説明する。
図3(a)に示すように、上記のような粗面RSでの液滴Duの接触パターンは、液滴Duが粗面RS上に載ったCassieモードでは、粗面RS中の凹部がエアポケットとなっており、液滴Duは固体と気体(空気)との複合接触の状態となる。このような複合接触では、液滴Duの接触界面での接触半径Rは小さく、液滴Duと粗面の密着力は低く、疎液性が最も高い空気に液体が接触するため、高い撥液性が発現する。このようなCassieモードでの粗面RSの接触角は、以下の理論式(1)に示す通りである。
cosθ*=(1-φS)cosπ+φScosθE
=φS-1+φScosθE (1)
θE:接触角
θ*:見かけの接触角
φS:面積比(単位面積当たりの固-液界面の投影面積)
この理論式(1)から理解されるように、φSが小さいほど、見かけの接触角θ*は180度に近づき、超撥液性を示すようになる。 The liquid repellency of the droplet Du on the rough surface RS will be described with reference to FIG.
As shown in FIG. 3A, the contact pattern of the droplet Du on the rough surface RS as described above is such that the concave portion in the rough surface RS is air in the Cassie mode in which the droplet Du is placed on the rough surface RS. It is a pocket, and the droplet Du is in a composite contact state between the solid and the gas (air). In such a composite contact, the contact radius R at the contact interface of the droplet Du is small, the adhesion between the droplet Du and the rough surface is low, and the liquid comes into contact with the air having the highest lyophobic property. Sex is expressed. The contact angle of the rough surface RS in the Cassie mode is as shown in the following theoretical formula (1).
cosθ * = (1-φ S ) cosπ + φ S cosθ E
= Φ S -1 + φ S cosθ E (1)
θ E : contact angle θ * : apparent contact angle φ S : area ratio (projected area of solid-liquid interface per unit area)
As can be understood from the theoretical formula (1), the smaller the φ S , the closer the apparent contact angle θ * approaches 180 degrees and the super liquid repellency is exhibited.
図3(a)に示すように、上記のような粗面RSでの液滴Duの接触パターンは、液滴Duが粗面RS上に載ったCassieモードでは、粗面RS中の凹部がエアポケットとなっており、液滴Duは固体と気体(空気)との複合接触の状態となる。このような複合接触では、液滴Duの接触界面での接触半径Rは小さく、液滴Duと粗面の密着力は低く、疎液性が最も高い空気に液体が接触するため、高い撥液性が発現する。このようなCassieモードでの粗面RSの接触角は、以下の理論式(1)に示す通りである。
cosθ*=(1-φS)cosπ+φScosθE
=φS-1+φScosθE (1)
θE:接触角
θ*:見かけの接触角
φS:面積比(単位面積当たりの固-液界面の投影面積)
この理論式(1)から理解されるように、φSが小さいほど、見かけの接触角θ*は180度に近づき、超撥液性を示すようになる。 The liquid repellency of the droplet Du on the rough surface RS will be described with reference to FIG.
As shown in FIG. 3A, the contact pattern of the droplet Du on the rough surface RS as described above is such that the concave portion in the rough surface RS is air in the Cassie mode in which the droplet Du is placed on the rough surface RS. It is a pocket, and the droplet Du is in a composite contact state between the solid and the gas (air). In such a composite contact, the contact radius R at the contact interface of the droplet Du is small, the adhesion between the droplet Du and the rough surface is low, and the liquid comes into contact with the air having the highest lyophobic property. Sex is expressed. The contact angle of the rough surface RS in the Cassie mode is as shown in the following theoretical formula (1).
cosθ * = (1-φ S ) cosπ + φ S cosθ E
= Φ S -1 + φ S cosθ E (1)
θ E : contact angle θ * : apparent contact angle φ S : area ratio (projected area of solid-liquid interface per unit area)
As can be understood from the theoretical formula (1), the smaller the φ S , the closer the apparent contact angle θ * approaches 180 degrees and the super liquid repellency is exhibited.
一方、図3(b)に示すように、液滴Duが粗面RS中の凹部に侵入した場合には、液滴Duは上記のような複合接触ではなく、固体のみとの接触となり、Wenzelモードで示される。このようなWenzelモードでは、液滴Duの接触界面での接触半径Rは大きく、液滴Duと粗面の密着力は高い。その凹凸表面の接触角は、以下の理論式(2)に示す通りである。
cosθ*=rcosθE (2)
θE:接触角
θ*:見かけの接触角
r:凹凸度(=実接触面積/液滴の投影面積)
この理論式(2)から理解されるように、rが大きいほど、見かけの接触角θ*は180度に近づき、超撥液性を示すようになる。 On the other hand, as shown in FIG. 3B, when the droplet Du enters the concave portion in the rough surface RS, the droplet Du is not in contact with the composite as described above, but in contact with only the solid. Shown in mode. In such a Wenzel mode, the contact radius R at the contact interface of the droplet Du is large, and the adhesion between the droplet Du and the rough surface is high. The contact angle of the uneven surface is as shown in the following theoretical formula (2).
cosθ * = rcosθ E (2)
θ E : Contact angle θ * : Apparent contact angle r: Concavity and convexity (= actual contact area / droplet projection area)
As understood from the theoretical formula (2), as r is larger, the apparent contact angle θ * approaches 180 degrees and exhibits super-liquid repellency.
cosθ*=rcosθE (2)
θE:接触角
θ*:見かけの接触角
r:凹凸度(=実接触面積/液滴の投影面積)
この理論式(2)から理解されるように、rが大きいほど、見かけの接触角θ*は180度に近づき、超撥液性を示すようになる。 On the other hand, as shown in FIG. 3B, when the droplet Du enters the concave portion in the rough surface RS, the droplet Du is not in contact with the composite as described above, but in contact with only the solid. Shown in mode. In such a Wenzel mode, the contact radius R at the contact interface of the droplet Du is large, and the adhesion between the droplet Du and the rough surface is high. The contact angle of the uneven surface is as shown in the following theoretical formula (2).
cosθ * = rcosθ E (2)
θ E : Contact angle θ * : Apparent contact angle r: Concavity and convexity (= actual contact area / droplet projection area)
As understood from the theoretical formula (2), as r is larger, the apparent contact angle θ * approaches 180 degrees and exhibits super-liquid repellency.
ここで、撥液性については、上記の通り、WenzelモードとCassieモードのいずれの状態においても撥液性が向上することが知られているが、粗面RSと液滴Duとの密着力を低減させ、液滴Duに対する転落性を高めるには、Wenzelモードではなく、Cassieモードを安定的に維持すること、すなわち、凹部のエアポケットを安定に維持することが必要であると考えられる。
すなわち、Wenzelモードでは、液相と固相の界面が大きく、その結果、界面に働く物理的な吸着力も大きくなるため、接触角は大きく撥液はしているが、液滴Duが容易に転落しない。
これに対して、Cassieモードでは、界面が小さいため、液滴Duが転落する際乗り越えなければならない密着力が低く、容易に転落し、何度でも繰り返し転落すると考えられる。 Here, with regard to the liquid repellency, as described above, it is known that the liquid repellency is improved in both the Wenzel mode and the Cassie mode, but the adhesion between the rough surface RS and the droplet Du is improved. In order to reduce and improve the falling property for the droplet Du, it is considered necessary to stably maintain the Cassie mode, not the Wenzel mode, that is, to stably maintain the air pockets of the recesses.
That is, in the Wenzel mode, the interface between the liquid phase and the solid phase is large, and as a result, the physical adsorption force acting on the interface also increases, so that the contact angle is large and the liquid repellent, but the droplet Du falls easily. do not do.
On the other hand, in the Cassie mode, since the interface is small, the adhesion force that must be overcome when the droplets Du fall is low, and the droplets can easily fall and repeatedly fall over again.
すなわち、Wenzelモードでは、液相と固相の界面が大きく、その結果、界面に働く物理的な吸着力も大きくなるため、接触角は大きく撥液はしているが、液滴Duが容易に転落しない。
これに対して、Cassieモードでは、界面が小さいため、液滴Duが転落する際乗り越えなければならない密着力が低く、容易に転落し、何度でも繰り返し転落すると考えられる。 Here, with regard to the liquid repellency, as described above, it is known that the liquid repellency is improved in both the Wenzel mode and the Cassie mode, but the adhesion between the rough surface RS and the droplet Du is improved. In order to reduce and improve the falling property for the droplet Du, it is considered necessary to stably maintain the Cassie mode, not the Wenzel mode, that is, to stably maintain the air pockets of the recesses.
That is, in the Wenzel mode, the interface between the liquid phase and the solid phase is large, and as a result, the physical adsorption force acting on the interface also increases, so that the contact angle is large and the liquid repellent, but the droplet Du falls easily. do not do.
On the other hand, in the Cassie mode, since the interface is small, the adhesion force that must be overcome when the droplets Du fall is low, and the droplets can easily fall and repeatedly fall over again.
そこで、本実施形態においては、上記のCassieモードでの液滴Duの接触を有効に維持するために、撥液部材122の粗面RSを形成している非フッ素系樹脂の分子鎖中にフッ素原子を組み込むことにより、化学的に撥液性を付与するようにしている。
すなわち、粗面RS中の凹部に液体が侵入してしまうと、液滴Duの接触パターンはWenzelモードとなってしまい、この結果、Cassieモードによる超撥液性は損なわれてしまうが、本実施形態では、粗面RSを形成する非フッ素系樹脂の分子鎖中にフッ素原子を組み込むことにより、粗面RSに対して化学的に撥液性を付与することができ、これによって凹部内への液体の侵入が有効に抑制され、Cassieモードによる超撥液性が安定に維持されることとなる。 Therefore, in the present embodiment, in order to effectively maintain the contact of the droplet Du in the Cassie mode, fluorine is contained in the molecular chain of the non-fluorine resin forming the rough surface RS of theliquid repellent member 122. By incorporating atoms, liquid repellency is imparted chemically.
That is, if the liquid enters the concave portion in the rough surface RS, the contact pattern of the droplet Du becomes the Wenzel mode. As a result, the super-liquid repellency by the Cassie mode is impaired. In the embodiment, by incorporating fluorine atoms into the molecular chain of the non-fluorine resin that forms the rough surface RS, the liquid repellency can be chemically imparted to the rough surface RS, and thereby into the recess. The penetration of the liquid is effectively suppressed, and the super liquid repellency by the Cassie mode is stably maintained.
すなわち、粗面RS中の凹部に液体が侵入してしまうと、液滴Duの接触パターンはWenzelモードとなってしまい、この結果、Cassieモードによる超撥液性は損なわれてしまうが、本実施形態では、粗面RSを形成する非フッ素系樹脂の分子鎖中にフッ素原子を組み込むことにより、粗面RSに対して化学的に撥液性を付与することができ、これによって凹部内への液体の侵入が有効に抑制され、Cassieモードによる超撥液性が安定に維持されることとなる。 Therefore, in the present embodiment, in order to effectively maintain the contact of the droplet Du in the Cassie mode, fluorine is contained in the molecular chain of the non-fluorine resin forming the rough surface RS of the
That is, if the liquid enters the concave portion in the rough surface RS, the contact pattern of the droplet Du becomes the Wenzel mode. As a result, the super-liquid repellency by the Cassie mode is impaired. In the embodiment, by incorporating fluorine atoms into the molecular chain of the non-fluorine resin that forms the rough surface RS, the liquid repellency can be chemically imparted to the rough surface RS, and thereby into the recess. The penetration of the liquid is effectively suppressed, and the super liquid repellency by the Cassie mode is stably maintained.
特に、本実施形態では、粗面RSの少なくとも一部分、例えば、凸部の頂部や凹部の底部において、この面を形成する非フッ素系樹脂の分子鎖中に、化学的撥液性を発現させるためのフッ素原子が組み込まれるようになっている。このため、この粗面RSに液が繰り返し接触した場合にも、このフッ素原子が取り除かれることはなく、化学的撥液性が安定して維持され、結果として、Cassieモードによる超撥液性が低下することなく、初期段階と同様に高いレベルに維持されるようになる。
さらに、フッ素原子を含む膜を形成するのではなく、表面の非フッ素系樹脂の分子鎖中にフッ素原子を組み込んでいるため、剥離や脱落などによる異物混入の問題も一切生じない。 In particular, in this embodiment, at least a part of the rough surface RS, for example, at the top of the convex portion or the bottom of the concave portion, the chemical liquid repellency is expressed in the molecular chain of the non-fluorine resin forming this surface. The fluorine atom is incorporated. For this reason, even when the liquid repeatedly contacts the rough surface RS, the fluorine atoms are not removed and the chemical liquid repellency is stably maintained. As a result, the super liquid repellency by the Cassie mode is maintained. Without being lowered, the high level is maintained as in the initial stage.
Furthermore, since a fluorine atom is incorporated into the molecular chain of the non-fluorine resin on the surface instead of forming a film containing fluorine atoms, there is no problem of contamination due to peeling or dropping.
さらに、フッ素原子を含む膜を形成するのではなく、表面の非フッ素系樹脂の分子鎖中にフッ素原子を組み込んでいるため、剥離や脱落などによる異物混入の問題も一切生じない。 In particular, in this embodiment, at least a part of the rough surface RS, for example, at the top of the convex portion or the bottom of the concave portion, the chemical liquid repellency is expressed in the molecular chain of the non-fluorine resin forming this surface. The fluorine atom is incorporated. For this reason, even when the liquid repeatedly contacts the rough surface RS, the fluorine atoms are not removed and the chemical liquid repellency is stably maintained. As a result, the super liquid repellency by the Cassie mode is maintained. Without being lowered, the high level is maintained as in the initial stage.
Furthermore, since a fluorine atom is incorporated into the molecular chain of the non-fluorine resin on the surface instead of forming a film containing fluorine atoms, there is no problem of contamination due to peeling or dropping.
ここで、上記のような粗面RSの凹凸形状の程度は、Cassieモードによる撥液性が十分に発揮されるように、粗面RS中の単位面積当たりの凸部頂部Sの面積で表される面積比φsが0.05以上、好ましくは0.08以上の範囲にあることが好ましい。
さらに、成形性や機械的強度の観点から、面積比φsは0.8以下、特に0.5以下の範囲にあることが好ましい。
また、粗面RSにおける深さdは、5~200μm、特に10~50μmの範囲にあることが好適である。 Here, the degree of the concavo-convex shape of the rough surface RS is expressed by the area of the convex top S per unit area in the rough surface RS so that the liquid repellency by the Cassie mode is sufficiently exhibited. It is preferable that the area ratio φs is in the range of 0.05 or more, preferably 0.08 or more.
Further, from the viewpoint of moldability and mechanical strength, the area ratio φs is preferably 0.8 or less, particularly preferably 0.5 or less.
The depth d in the rough surface RS is preferably in the range of 5 to 200 μm, particularly 10 to 50 μm.
さらに、成形性や機械的強度の観点から、面積比φsは0.8以下、特に0.5以下の範囲にあることが好ましい。
また、粗面RSにおける深さdは、5~200μm、特に10~50μmの範囲にあることが好適である。 Here, the degree of the concavo-convex shape of the rough surface RS is expressed by the area of the convex top S per unit area in the rough surface RS so that the liquid repellency by the Cassie mode is sufficiently exhibited. It is preferable that the area ratio φs is in the range of 0.05 or more, preferably 0.08 or more.
Further, from the viewpoint of moldability and mechanical strength, the area ratio φs is preferably 0.8 or less, particularly preferably 0.5 or less.
The depth d in the rough surface RS is preferably in the range of 5 to 200 μm, particularly 10 to 50 μm.
本実施形態において、撥液部材122の表面に形成される粗面は、図2に示した粗面RSの凹凸形状に限定されないが、エアポケットを安定に形成するという観点からは、図2に示したような凸部及び凹部が矩形状に形成されていることが好ましい。例えば、凹部がV字形状のような形態となっていると、液滴Duが凹部内に入り込みやすくなるからである。
また、粗面RSの凹凸形状の凹部内への液滴Duの侵入がより有効に抑制されるようにするには、図4に示すように、当該凹凸形状の表面の少なくとも一部に、当該凹凸形状より小さな補助用凹凸形状sRSを形成するのが好ましい。このようにすると、液滴Duが粗面RS上に載ったときに、液滴Duと補助用凹凸形状sRSとの間にもエアポケットが形成されるようになり、これによって、相対的に大きな凹凸形状の凹部への液滴Duの侵入が阻止されて、Cassieモードによる超撥液性がより安定に維持されることとなる。 In the present embodiment, the rough surface formed on the surface of theliquid repellent member 122 is not limited to the uneven shape of the rough surface RS shown in FIG. 2, but from the viewpoint of stably forming the air pocket, FIG. It is preferable that the convex part and the concave part as shown are formed in a rectangular shape. For example, if the recess has a V-shaped form, the droplet Du can easily enter the recess.
Further, in order to more effectively suppress the intrusion of the liquid droplet Du into the concave-convex concave portion of the rough surface RS, as shown in FIG. It is preferable to form an auxiliary uneven shape sRS smaller than the uneven shape. In this way, when the droplet Du is placed on the rough surface RS, an air pocket is also formed between the droplet Du and the auxiliary concave / convex shape sRS. Intrusion of the droplet Du into the concave and convex portions is prevented, and the super-liquid repellency by the Cassie mode is more stably maintained.
また、粗面RSの凹凸形状の凹部内への液滴Duの侵入がより有効に抑制されるようにするには、図4に示すように、当該凹凸形状の表面の少なくとも一部に、当該凹凸形状より小さな補助用凹凸形状sRSを形成するのが好ましい。このようにすると、液滴Duが粗面RS上に載ったときに、液滴Duと補助用凹凸形状sRSとの間にもエアポケットが形成されるようになり、これによって、相対的に大きな凹凸形状の凹部への液滴Duの侵入が阻止されて、Cassieモードによる超撥液性がより安定に維持されることとなる。 In the present embodiment, the rough surface formed on the surface of the
Further, in order to more effectively suppress the intrusion of the liquid droplet Du into the concave-convex concave portion of the rough surface RS, as shown in FIG. It is preferable to form an auxiliary uneven shape sRS smaller than the uneven shape. In this way, when the droplet Du is placed on the rough surface RS, an air pocket is also formed between the droplet Du and the auxiliary concave / convex shape sRS. Intrusion of the droplet Du into the concave and convex portions is prevented, and the super-liquid repellency by the Cassie mode is more stably maintained.
撥液部材122の表面は、フッ素化され、かつ、粗面化されることが、撥液性を向上させることから好ましいが、撥液部材122の表面は、少なくともフッ素化されていれば、撥液性能を発揮することができる。また、前述したように、撥液部材122の表面をフッ素化するためのプラズマ処理は、非常にアタック性の強いもので、プラズマ処理によって撥液部材122の表面には微細な凹凸が形成されて粗面化される。
従って、撥液部材122の表面は、少なくともフッ素化されていればよく、必要に応じて、さらに撥液部材122の表面を粗面化するものであれば良い。 The surface of theliquid repellent member 122 is preferably fluorinated and roughened in order to improve the liquid repellency. However, if the surface of the liquid repellent member 122 is at least fluorinated, the surface is repellent. Liquid performance can be demonstrated. In addition, as described above, the plasma treatment for fluorinating the surface of the liquid repellent member 122 is very strong in attack, and fine irregularities are formed on the surface of the liquid repellent member 122 by the plasma treatment. Roughened.
Therefore, the surface of theliquid repellent member 122 only needs to be at least fluorinated, and may be any surface that further roughens the surface of the liquid repellent member 122 as necessary.
従って、撥液部材122の表面は、少なくともフッ素化されていればよく、必要に応じて、さらに撥液部材122の表面を粗面化するものであれば良い。 The surface of the
Therefore, the surface of the
[注出口部の構造]
図1に示す例において、注出具101の注出口部102には、筒状主部121の外周面に対して外方に突出する張り出し部122aを有する環状の撥液部材122が、円筒状に立ち上る筒状主部121の開口側端縁部に取り付けられている。そして、環状に形成された撥液部材122の内径は、撥液部材122の内周面が筒状主部121の内周面と面一になるように、筒状主部121の内径と同径とされている。これにより、注出口部102の天面側の部位が、その全周にわたって撥液部材122によって構成されるようにしている。
また、撥液部材122の内周面側には、筒状主部121の開口側端縁部の厚み分が周方向に沿って切り欠かれて、筒状主部121の開口側端縁部と係合する係合段部122bが形成されており、撥液部材122が、張り出し部122aを除く部位において、筒状主部121の開口側端縁部と係合した状態で接合されるようにしている。 [Structure of spout part]
In the example shown in FIG. 1, an annular liquidrepellent member 122 having an overhanging portion 122 a that protrudes outward with respect to the outer peripheral surface of the cylindrical main portion 121 is formed in a cylindrical shape at the spout portion 102 of the extraction tool 101. It is attached to the opening edge of the cylindrical main part 121 that rises. The inner diameter of the liquid repellent member 122 formed in an annular shape is the same as the inner diameter of the cylindrical main portion 121 so that the inner peripheral surface of the liquid repellent member 122 is flush with the inner peripheral surface of the cylindrical main portion 121. It is the diameter. Thereby, the site | part of the top | upper surface side of the spout part 102 is comprised by the liquid repellent member 122 over the perimeter.
Further, on the inner peripheral surface side of theliquid repellent member 122, the opening side edge portion of the cylindrical main portion 121 is cut out along the circumferential direction, and the opening side edge portion of the cylindrical main portion 121 is cut. An engagement step portion 122b is formed to be engaged with the liquid repellent member 122 so that the liquid repellent member 122 is joined in an engaged state with the opening side edge portion of the cylindrical main portion 121 at a portion excluding the overhang portion 122a. I have to.
図1に示す例において、注出具101の注出口部102には、筒状主部121の外周面に対して外方に突出する張り出し部122aを有する環状の撥液部材122が、円筒状に立ち上る筒状主部121の開口側端縁部に取り付けられている。そして、環状に形成された撥液部材122の内径は、撥液部材122の内周面が筒状主部121の内周面と面一になるように、筒状主部121の内径と同径とされている。これにより、注出口部102の天面側の部位が、その全周にわたって撥液部材122によって構成されるようにしている。
また、撥液部材122の内周面側には、筒状主部121の開口側端縁部の厚み分が周方向に沿って切り欠かれて、筒状主部121の開口側端縁部と係合する係合段部122bが形成されており、撥液部材122が、張り出し部122aを除く部位において、筒状主部121の開口側端縁部と係合した状態で接合されるようにしている。 [Structure of spout part]
In the example shown in FIG. 1, an annular liquid
Further, on the inner peripheral surface side of the
注出具101の注出口部102に撥液部材122を取り付けるには、超音波融着、熱融着、接着剤、嵌合などの適宜手段によって取り付けるようにしてもよく、脱着可能としてもよい。
また、例えば、図5に示すように、撥液部材122をインサート材として金型内に配置し、インモールド成形により注出具101を成形することによって取り付けてもよい。
なお、図5は、撥液部材122をインサート材として金型内に配置して、注出具101をインモールド成形する場合に、図1において鎖線で囲む部分を成形する金型要部の構造を示す説明図である。 In order to attach theliquid repellent member 122 to the spout portion 102 of the dispensing tool 101, it may be attached by appropriate means such as ultrasonic fusion, thermal fusion, adhesive, fitting, etc., or may be removable.
Further, for example, as shown in FIG. 5, theliquid repellent member 122 may be disposed as an insert material in a mold and attached by molding the extraction tool 101 by in-mold molding.
5 shows the structure of the main part of the mold for molding the portion surrounded by the chain line in FIG. 1 when theliquid repellent member 122 is placed in the mold as an insert material and the pouring tool 101 is molded in-mold. It is explanatory drawing shown.
また、例えば、図5に示すように、撥液部材122をインサート材として金型内に配置し、インモールド成形により注出具101を成形することによって取り付けてもよい。
なお、図5は、撥液部材122をインサート材として金型内に配置して、注出具101をインモールド成形する場合に、図1において鎖線で囲む部分を成形する金型要部の構造を示す説明図である。 In order to attach the
Further, for example, as shown in FIG. 5, the
5 shows the structure of the main part of the mold for molding the portion surrounded by the chain line in FIG. 1 when the
インモールド成形に際し、金型内に加圧状態で射出された溶融樹脂によって、撥液部材122がキャビティ面に押し付けられると、撥液部材122の粗面RSの凹凸形状が押し潰されて、撥液性が損なわれてしまうことが懸念されるが、注出口部102の構造を図1に示すようにすることで、そのような不具合を有効に回避することができる。
すなわち、インモールド成形する際の筒状主部121を形成する樹脂の流れ方向を図5に矢印で示すが、筒状主部121の外周面に対して外方に突出する張り出し部122aを有する撥液部材122を、張り出し部122aを除く部位において、筒状主部121の開口側端縁部に接合されるようにすることで、筒状主部121の開口側端縁部に接合される撥液部材122の内周面側の部位(係合段部122b)には射出樹脂圧がかかるものの、張り出し部122aには射出樹脂圧がかからないようにすることができる。これにより、少なくとも張り出し部122aにおいて、撥液部材122の粗面RSの凹凸形状が押し潰されてしまうのを抑制し、その撥液性が損なわれないようにすることができる。 In in-mold molding, when theliquid repellent member 122 is pressed against the cavity surface by the molten resin injected into the mold in a pressurized state, the uneven shape of the rough surface RS of the liquid repellent member 122 is crushed and repelled. Although there is a concern that the liquidity is impaired, such a problem can be effectively avoided by making the structure of the spout portion 102 as shown in FIG.
That is, the flow direction of the resin that forms the cylindricalmain portion 121 during in-mold molding is indicated by an arrow in FIG. 5, and has a protruding portion 122 a that protrudes outward with respect to the outer peripheral surface of the cylindrical main portion 121. The liquid repellent member 122 is joined to the opening side edge of the cylindrical main part 121 by joining the liquid repellent member 122 to the opening side edge of the cylindrical main part 121 at a portion other than the overhanging part 122a. Although the injection resin pressure is applied to the inner peripheral surface side portion (engagement step portion 122b) of the liquid repellent member 122, it is possible to prevent the injection resin pressure from being applied to the overhang portion 122a. Thereby, it is possible to prevent the uneven shape of the rough surface RS of the liquid repellent member 122 from being crushed at least in the overhanging portion 122a, so that the liquid repellency is not impaired.
すなわち、インモールド成形する際の筒状主部121を形成する樹脂の流れ方向を図5に矢印で示すが、筒状主部121の外周面に対して外方に突出する張り出し部122aを有する撥液部材122を、張り出し部122aを除く部位において、筒状主部121の開口側端縁部に接合されるようにすることで、筒状主部121の開口側端縁部に接合される撥液部材122の内周面側の部位(係合段部122b)には射出樹脂圧がかかるものの、張り出し部122aには射出樹脂圧がかからないようにすることができる。これにより、少なくとも張り出し部122aにおいて、撥液部材122の粗面RSの凹凸形状が押し潰されてしまうのを抑制し、その撥液性が損なわれないようにすることができる。 In in-mold molding, when the
That is, the flow direction of the resin that forms the cylindrical
撥液部材122は、注出具101よりも小さな部材であるため、フッ素化・粗面化する際の搬送効率が向上するとともに、処理装置を小型化でき、同時にフッ素化・粗面化できる数を増やすこともできる。また、フィルム状又はシート状の基材をフッ素化・粗面化した後に、これを打ち抜いて撥液部材122を作製することもできる。
従って、注出口部102に撥液部材122を取り付けて、かかる撥液部材122によって注出口部102の天面側の部位が形成されるようにすることで、内容液の注ぎ口となる注出口部102に簡便に撥液性を付与することができる。そして、図6(a)に示すように、傾けられた注出具101の注出口部102を通して必要量の内容液が注がれると、図6(b)に示すように、その液滴が注出口部102の天面から転落することによって、優れた液切れ性を発揮させることができる。 Since theliquid repellent member 122 is a member smaller than the pouring tool 101, the transport efficiency during fluorination / roughening can be improved, the processing apparatus can be downsized, and the number that can be fluorinated / roughened simultaneously. It can also be increased. Alternatively, the lyophobic member 122 can be produced by punching a film-like or sheet-like base material and then punching it.
Therefore, by attaching theliquid repellent member 122 to the spout portion 102 so that the top surface side portion of the spout portion 102 is formed by the liquid repellent member 122, the spout serving as the spout for the content liquid is formed. Liquid repellency can be easily imparted to the portion 102. Then, as shown in FIG. 6 (a), when a necessary amount of the content liquid is poured through the outlet portion 102 of the tilted dispensing tool 101, the droplets are poured as shown in FIG. 6 (b). By falling from the top surface of the outlet portion 102, it is possible to exhibit excellent liquidity.
従って、注出口部102に撥液部材122を取り付けて、かかる撥液部材122によって注出口部102の天面側の部位が形成されるようにすることで、内容液の注ぎ口となる注出口部102に簡便に撥液性を付与することができる。そして、図6(a)に示すように、傾けられた注出具101の注出口部102を通して必要量の内容液が注がれると、図6(b)に示すように、その液滴が注出口部102の天面から転落することによって、優れた液切れ性を発揮させることができる。 Since the
Therefore, by attaching the
以上、本発明について、第一実施形態を示して説明したが、本実施形態によれば、注出口部に撥液部材を取り付けて、注出口部の天面側の少なくとも一部が撥液部材によって形成されるようにすることで、注出口部に簡便に撥液性を付与することを可能とし、優れた液切れ性を発揮させることができる。
このような本発明の第一実施形態に係る注出具は、例えば、醤油、ソース、ドレッシング等の調味料類、洗剤、化粧品等の薬液類などを内容液として、かかる内容液を液切れ良く注ぎ出すことができる注出具として利用することができるが、上述した実施形態にのみ限定されるものではなく、本発明の範囲で種々の変更実施が可能であることは言うまでもない。 As described above, the present invention has been described with reference to the first embodiment. However, according to this embodiment, a liquid repellent member is attached to the spout portion, and at least a part of the top surface side of the spout portion is a liquid repellent member. Thus, it is possible to easily impart liquid repellency to the spout portion and to exhibit excellent liquid drainage.
Such a pouring tool according to the first embodiment of the present invention uses, for example, soy sauce, sauces, dressings and other seasonings, detergents, cosmetics and other chemicals as the content liquid, and pours such content liquid with good liquidity. Although it can utilize as a pouring tool which can be taken out, it is not limited only to embodiment mentioned above, and it cannot be overemphasized that various change implementation is possible in the scope of the present invention.
このような本発明の第一実施形態に係る注出具は、例えば、醤油、ソース、ドレッシング等の調味料類、洗剤、化粧品等の薬液類などを内容液として、かかる内容液を液切れ良く注ぎ出すことができる注出具として利用することができるが、上述した実施形態にのみ限定されるものではなく、本発明の範囲で種々の変更実施が可能であることは言うまでもない。 As described above, the present invention has been described with reference to the first embodiment. However, according to this embodiment, a liquid repellent member is attached to the spout portion, and at least a part of the top surface side of the spout portion is a liquid repellent member. Thus, it is possible to easily impart liquid repellency to the spout portion and to exhibit excellent liquid drainage.
Such a pouring tool according to the first embodiment of the present invention uses, for example, soy sauce, sauces, dressings and other seasonings, detergents, cosmetics and other chemicals as the content liquid, and pours such content liquid with good liquidity. Although it can utilize as a pouring tool which can be taken out, it is not limited only to embodiment mentioned above, and it cannot be overemphasized that various change implementation is possible in the scope of the present invention.
例えば、上述した実施形態では、撥液部材122の内周面側に、筒状主部121の開口側端縁部の厚み分を切り欠いてなる係合段部122bを形成することで、撥液部材122が、張り出し部122aを除く部位において、筒状主部121の開口側端縁部と係合した状態で接合されるようにしているが、これに限定されない。図7に示すようにして、撥液部材122が、筒状主部121の開口側端縁部に接合されるようにしてもよい。
For example, in the above-described embodiment, the engagement step portion 122b formed by cutting out the thickness of the opening side edge portion of the cylindrical main portion 121 is formed on the inner peripheral surface side of the liquid repellent member 122. The liquid member 122 is joined in a state where the liquid member 122 is engaged with the opening-side edge portion of the cylindrical main portion 121 at a portion other than the overhang portion 122a, but is not limited thereto. As shown in FIG. 7, the liquid repellent member 122 may be joined to the opening side edge of the cylindrical main portion 121.
図7に示す変形例では、筒状主部121の開口側端縁部が、周方向に沿って斜めに切り欠かれて、外周面側に向かって下るように傾斜するテーパー状に形成されているとともに、撥液部材122の内周面側には、筒状主部121の開口側端縁部と当接するテーパー曲面部122cが形成されている。これにより、撥液部材122が、張り出し部122aを除く部位において、筒状主部121の開口側端縁部と当接した状態で接合されるようにしている。
ここで、図7(a)は、本変形例の片側断面図であり、本変形例において、撥液部材122をインサート材として金型内に配置して、注出具101をインモールド成形する場合に、図7(a)において鎖線で囲む部分を成形する金型要部の構造を図7(b)に示す。 In the modification shown in FIG. 7, the opening-side edge portion of the cylindricalmain portion 121 is notched obliquely along the circumferential direction, and is formed in a tapered shape that is inclined downward toward the outer peripheral surface side. In addition, a tapered curved surface portion 122 c that abuts on the opening side edge of the cylindrical main portion 121 is formed on the inner peripheral surface side of the liquid repellent member 122. As a result, the liquid repellent member 122 is joined in a state where the liquid repellent member 122 is in contact with the opening side edge of the cylindrical main portion 121 at a portion other than the overhang portion 122a.
Here, FIG. 7A is a one-side cross-sectional view of the present modified example, and in this modified example, theliquid repellent member 122 is placed in a mold as an insert material, and the pouring tool 101 is in-mold molded. FIG. 7B shows the structure of the main part of the mold for molding the portion surrounded by the chain line in FIG.
ここで、図7(a)は、本変形例の片側断面図であり、本変形例において、撥液部材122をインサート材として金型内に配置して、注出具101をインモールド成形する場合に、図7(a)において鎖線で囲む部分を成形する金型要部の構造を図7(b)に示す。 In the modification shown in FIG. 7, the opening-side edge portion of the cylindrical
Here, FIG. 7A is a one-side cross-sectional view of the present modified example, and in this modified example, the
図7(b)に、インモールド成形する際に撥液部材122のテーパー曲面部122cにかかる樹脂圧Pとその分力を矢印で示し、テーパー状に形成された筒状主部121の開口側端縁部の勾配をθで示すが、撥液部材122をキャビティ面に押し付けようとする力は、P・cosθに減衰する。
したがって、本変形例によれば、筒状主部121の開口側端縁部に接合される撥液部材122の内周面側の部位(テーパー曲面部122c)には射出樹脂圧がかかるものの、当該部位をキャビティ面に押し付けようとする力を減衰させることができる。これによって、張り出し部122aを除く部位においても、撥液部材122の粗面RSの凹凸形状が押し潰されてしまうのを抑制することが可能となり、より有効に、撥液部材122の撥液性が損なわれないようにすることができる。 In FIG. 7B, the resin pressure P applied to the taperedcurved surface portion 122c of the liquid repellent member 122 and its component force during in-mold molding are indicated by arrows, and the opening side of the cylindrical main portion 121 formed in a tapered shape. Although the gradient of the edge portion is indicated by θ, the force to press the liquid repellent member 122 against the cavity surface is attenuated to P · cos θ.
Therefore, according to this modification, although the injection resin pressure is applied to the inner peripheral surface side portion (taperedcurved surface portion 122c) of the liquid repellent member 122 joined to the opening side edge of the cylindrical main portion 121, The force that tries to press the part against the cavity surface can be attenuated. As a result, it is possible to suppress the concavo-convex shape of the rough surface RS of the liquid repellent member 122 from being crushed even in the portion excluding the overhanging portion 122a. Can be kept intact.
したがって、本変形例によれば、筒状主部121の開口側端縁部に接合される撥液部材122の内周面側の部位(テーパー曲面部122c)には射出樹脂圧がかかるものの、当該部位をキャビティ面に押し付けようとする力を減衰させることができる。これによって、張り出し部122aを除く部位においても、撥液部材122の粗面RSの凹凸形状が押し潰されてしまうのを抑制することが可能となり、より有効に、撥液部材122の撥液性が損なわれないようにすることができる。 In FIG. 7B, the resin pressure P applied to the tapered
Therefore, according to this modification, although the injection resin pressure is applied to the inner peripheral surface side portion (tapered
また、上述した実施形態では、注出口部102の天面側の部位が、その全周にわたって環状の撥液部材122によって形成されるようにしているが、これに限定されない。例えば、特に図示しないが、注出具101には、注出口部102を封止する蓋体がヒンジ部を介して接続されている形態のものがあり、このような形態のもにあっては、蓋体が接続された側とは反対側から内容液を注ぎ出すことになる。このような形態の注出具101に本発明を適用する場合には、注出口部102の少なくとも内容液が通過する部分であって、その天面を含む部分に、撥液部材122を取り付けて、注出口部102の天面側の少なくとも一部が撥液部材122によって形成されるようにすることができる。
また、上述した実施形態のように、注出口部102は、通常、円筒状に立ち上る筒状主部121を有しているが、筒状主部121は、必要に応じて、角筒状に立ち上るように形成してもよい。 In the above-described embodiment, the top surface side portion of thespout portion 102 is formed by the annular liquid repellent member 122 over the entire circumference, but the present invention is not limited to this. For example, although not particularly illustrated, the pouring tool 101 has a form in which a lid for sealing the pouring part 102 is connected via a hinge part. The content liquid is poured out from the side opposite to the side to which the lid is connected. When the present invention is applied to the pouring tool 101 having such a configuration, the liquid repellent member 122 is attached to a portion through which at least the content liquid of the spout portion 102 passes and including the top surface thereof. At least a part of the top surface side of the spout portion 102 can be formed by the liquid repellent member 122.
Moreover, although thespout part 102 has the cylindrical main part 121 which stands | starts up cylindrically like the embodiment mentioned above, the cylindrical main part 121 is formed in a rectangular tube shape as needed. You may form so that it may stand up.
また、上述した実施形態のように、注出口部102は、通常、円筒状に立ち上る筒状主部121を有しているが、筒状主部121は、必要に応じて、角筒状に立ち上るように形成してもよい。 In the above-described embodiment, the top surface side portion of the
Moreover, although the
[第二実施形態]
次に、本発明に係る注出具の第二実施形態について説明するが、本実施形態に係る注出具は、各種の容器又は装置のノズルとして好適に利用することができ、液体を少量ずつ滴下可能とするものである。 [Second Embodiment]
Next, the second embodiment of the pouring tool according to the present invention will be described. However, the pouring tool according to the present embodiment can be suitably used as a nozzle of various containers or apparatuses, and liquid can be dripped little by little. It is what.
次に、本発明に係る注出具の第二実施形態について説明するが、本実施形態に係る注出具は、各種の容器又は装置のノズルとして好適に利用することができ、液体を少量ずつ滴下可能とするものである。 [Second Embodiment]
Next, the second embodiment of the pouring tool according to the present invention will be described. However, the pouring tool according to the present embodiment can be suitably used as a nozzle of various containers or apparatuses, and liquid can be dripped little by little. It is what.
一般に、目薬の点眼用容器などでは、容器内の液体(目薬)を少量ずつ滴下できるように注出部分にノズルが備えられている。
ここで、通常、人間の眼には約20μL程度の涙液を保持する容積があるが、従来の点眼用容器のノズルでは、1滴の滴下量が約30~40μLというのが一般的となっており、滴下された目薬のほぼ半分が眼から溢れ出てしまうという問題があった。
そこで、このような人間の眼の涙液保持容積に対応した、より少量の滴下を可能とする点眼用容器のノズルに関する提案がなされている。 In general, an eye drop container or the like is provided with a nozzle at a dispensing portion so that a liquid (eye drop) in the container can be dropped little by little.
Here, the human eye usually has a volume for holding about 20 μL of tear fluid, but with a conventional eye dropper nozzle, the drop volume of one drop is generally about 30-40 μL. There was a problem that almost half of the dropped eye drops overflowed from the eyes.
In view of this, a proposal has been made regarding a nozzle for an eye drop container that allows a smaller amount of dripping corresponding to the tear volume of human eyes.
ここで、通常、人間の眼には約20μL程度の涙液を保持する容積があるが、従来の点眼用容器のノズルでは、1滴の滴下量が約30~40μLというのが一般的となっており、滴下された目薬のほぼ半分が眼から溢れ出てしまうという問題があった。
そこで、このような人間の眼の涙液保持容積に対応した、より少量の滴下を可能とする点眼用容器のノズルに関する提案がなされている。 In general, an eye drop container or the like is provided with a nozzle at a dispensing portion so that a liquid (eye drop) in the container can be dropped little by little.
Here, the human eye usually has a volume for holding about 20 μL of tear fluid, but with a conventional eye dropper nozzle, the drop volume of one drop is generally about 30-40 μL. There was a problem that almost half of the dropped eye drops overflowed from the eyes.
In view of this, a proposal has been made regarding a nozzle for an eye drop container that allows a smaller amount of dripping corresponding to the tear volume of human eyes.
例えば、国際公開第号2014/123140号には、容器から点眼液を滴下させる注出ノズルの先端に、外径が0.5mm以上2.5mm以下のニードル部を備えることにより、1滴の滴下量を約5~25μL程度にすることができる「点眼用容器」が提案されている。
For example, in International Publication No. 2014/123140, a drop of one drop is provided by providing a needle portion having an outer diameter of 0.5 mm or more and 2.5 mm or less at the tip of a dispensing nozzle for dropping an ophthalmic solution from a container. An “eye drop container” has been proposed that can have an amount of about 5 to 25 μL.
しかしながら、国際公開第号2014/123140号に記載の「点眼用容器」では、ノズルの先端に微細なニードル部を備えることで滴下量を小さくしようとするものであるが、ノードル部自体には撥液性能はなく、滴下が行われるうちに、ニードル部を含むノズル先端部分に液滴が付着したりして残存してしまい、繰り返し使用されるに従って定量滴下が行えなくなるという問題があった。
また、0.5~2.5mmという微細なニードルは、点眼を行うユーザにとって、先端が非常に尖って見えることから、眼に突き刺さるような恐怖心を与えるおそれもあった。
また、そのような微細なニードルによっても、滴下量はせいぜい10μL程度が限界であり、滴下量の少量性としても十分なものとは言えなかった。 However, in the “eye drop container” described in International Publication No. 2014/123140, the amount of dripping is intended to be reduced by providing a fine needle part at the tip of the nozzle, but the nodule part itself is repellent. There was no liquid performance, and during the dropping, there was a problem that the liquid droplet adhered or remained on the tip of the nozzle including the needle portion, and as a result of repeated use, the quantitative dropping could not be performed.
In addition, a fine needle of 0.5 to 2.5 mm has a fear that it may be pierced into the eye because the tip of the needle looks very sharp for a user who is instilling.
Even with such a fine needle, the amount of dripping is limited to about 10 μL at most, and it cannot be said that the amount of dripping is small enough.
また、0.5~2.5mmという微細なニードルは、点眼を行うユーザにとって、先端が非常に尖って見えることから、眼に突き刺さるような恐怖心を与えるおそれもあった。
また、そのような微細なニードルによっても、滴下量はせいぜい10μL程度が限界であり、滴下量の少量性としても十分なものとは言えなかった。 However, in the “eye drop container” described in International Publication No. 2014/123140, the amount of dripping is intended to be reduced by providing a fine needle part at the tip of the nozzle, but the nodule part itself is repellent. There was no liquid performance, and during the dropping, there was a problem that the liquid droplet adhered or remained on the tip of the nozzle including the needle portion, and as a result of repeated use, the quantitative dropping could not be performed.
In addition, a fine needle of 0.5 to 2.5 mm has a fear that it may be pierced into the eye because the tip of the needle looks very sharp for a user who is instilling.
Even with such a fine needle, the amount of dripping is limited to about 10 μL at most, and it cannot be said that the amount of dripping is small enough.
以下、本実施形態に係る注出具を点眼用容器の液滴下ノズルに適用した例について説明する。
図8は、本実施形態に係る注出具を点眼用容器の液滴下ノズルに適用した例を示す説明図であり、(a)は点眼用容器全体の断面図、(b)は(a)に示すノズルの先端部分の拡大断面図である。 Hereinafter, the example which applied the extraction tool which concerns on this embodiment to the nozzle under a droplet of the container for eye drops is demonstrated.
FIG. 8 is an explanatory view showing an example in which the dispensing tool according to the present embodiment is applied to a lower droplet nozzle of an eye drop container, (a) is a sectional view of the whole eye drop container, and (b) is a view (a). It is an expanded sectional view of the tip portion of the nozzle shown.
図8は、本実施形態に係る注出具を点眼用容器の液滴下ノズルに適用した例を示す説明図であり、(a)は点眼用容器全体の断面図、(b)は(a)に示すノズルの先端部分の拡大断面図である。 Hereinafter, the example which applied the extraction tool which concerns on this embodiment to the nozzle under a droplet of the container for eye drops is demonstrated.
FIG. 8 is an explanatory view showing an example in which the dispensing tool according to the present embodiment is applied to a lower droplet nozzle of an eye drop container, (a) is a sectional view of the whole eye drop container, and (b) is a view (a). It is an expanded sectional view of the tip portion of the nozzle shown.
[点眼用容器]
同図に示すように、本実施形態に係る注出具を適用した液滴下ノズルは、目薬の点眼用容器201の注出口となるノズル210を構成している。
具体的には、点眼用容器201は、内部に目薬となる液体を収容・貯留可能な容器本体202と、この容器本体202の上面(滴下使用時の底面)のほぼ中心から突出した、液体の注出口となるノズル210を備えている。容器本体202とノズル210とは連通しており、容器本体202に貯留された目薬がノズル210の開口部210aから、容器外部に注出・滴下されるようになっている。 [Eye container]
As shown in the figure, the droplet lowering nozzle to which the dispensing tool according to the present embodiment is applied constitutes anozzle 210 serving as a spout for an eye drop container 201 for eye drops.
Specifically, theeye drop container 201 includes a container main body 202 that can store and store a liquid serving as an eye drop therein, and a liquid that protrudes from substantially the center of the upper surface of the container main body 202 (the bottom surface when using the drop). A nozzle 210 serving as a spout is provided. The container main body 202 and the nozzle 210 communicate with each other, and the eye drops stored in the container main body 202 are poured out and dripped from the opening 210a of the nozzle 210 to the outside of the container.
同図に示すように、本実施形態に係る注出具を適用した液滴下ノズルは、目薬の点眼用容器201の注出口となるノズル210を構成している。
具体的には、点眼用容器201は、内部に目薬となる液体を収容・貯留可能な容器本体202と、この容器本体202の上面(滴下使用時の底面)のほぼ中心から突出した、液体の注出口となるノズル210を備えている。容器本体202とノズル210とは連通しており、容器本体202に貯留された目薬がノズル210の開口部210aから、容器外部に注出・滴下されるようになっている。 [Eye container]
As shown in the figure, the droplet lowering nozzle to which the dispensing tool according to the present embodiment is applied constitutes a
Specifically, the
なお、ノズル210を含む容器本体202には、図示しないキャップが着脱可能に装着されるようになっており、キャップによって、ノズル210が覆われ、容器本体202の内部が密閉されるとともに、ノズル210の先端部が保護されるようにすることができる。
A cap (not shown) is detachably attached to the container body 202 including the nozzle 210. The nozzle 210 is covered with the cap, the inside of the container body 202 is sealed, and the nozzle 210 is sealed. The tip of can be protected.
[ノズル]
ノズル210は、図8に示すように、容器本体202とは別体に形成されており、容器本体202の口部に形成されたノズル装着用の突出部分に挿入・嵌合されて容器本体202と一体となって、点眼用容器201を構成する。
具体的には、ノズル210は、例えば円筒形状や角筒形状に形成され、容器本体202の液体の貯留空間と連通するようになっている。そして、その筒状のノズル210の開口部210aを介して、容器本体202の内部から液体が注出・滴下される。 [nozzle]
As shown in FIG. 8, thenozzle 210 is formed separately from the container main body 202, and is inserted and fitted into a nozzle mounting protrusion formed at the mouth of the container main body 202, so that the container main body 202 is inserted. And the eye drop container 201 are formed.
Specifically, thenozzle 210 is formed in a cylindrical shape or a rectangular tube shape, for example, and communicates with the liquid storage space of the container body 202. Then, liquid is poured out and dropped from the inside of the container body 202 through the opening 210 a of the cylindrical nozzle 210.
ノズル210は、図8に示すように、容器本体202とは別体に形成されており、容器本体202の口部に形成されたノズル装着用の突出部分に挿入・嵌合されて容器本体202と一体となって、点眼用容器201を構成する。
具体的には、ノズル210は、例えば円筒形状や角筒形状に形成され、容器本体202の液体の貯留空間と連通するようになっている。そして、その筒状のノズル210の開口部210aを介して、容器本体202の内部から液体が注出・滴下される。 [nozzle]
As shown in FIG. 8, the
Specifically, the
本実施形態では、このようなノズル210の開口部210aが開口する先端側に、撥液部材211が取り付けられており、かかる撥液部材211が、ノズル210の先端部の少なくとも一部を構成している。
In the present embodiment, the liquid repellent member 211 is attached to the front end side where the opening 210 a of the nozzle 210 opens, and the liquid repellent member 211 constitutes at least a part of the front end of the nozzle 210. ing.
[撥液部材]
本実施形態において、撥液部材211は、非フッ素系樹脂からなり、撥液部材211の表面を形成する非フッ素系樹脂の分子鎖中に、フッ素原子が組み込まれている。例えば、非フッ素系樹脂の分子鎖を-(CH2)n-で表すと、この分子鎖の一部にフッ素原子が組み込まれ、例えば-CHF-或いは-CF2-などの含フッ素部分が生成されて、撥液部材211の表面がフッ素化されるようにしている。 [Liquid repellent material]
In the present embodiment, theliquid repellent member 211 is made of a non-fluorine resin, and fluorine atoms are incorporated in the molecular chain of the non-fluorine resin that forms the surface of the liquid repellent member 211. For example, when a molecular chain of a non-fluorine resin is represented by — (CH 2 ) n—, a fluorine atom is incorporated into a part of the molecular chain, and a fluorine-containing moiety such as —CHF— or —CF 2 — is generated. Thus, the surface of the liquid repellent member 211 is fluorinated.
本実施形態において、撥液部材211は、非フッ素系樹脂からなり、撥液部材211の表面を形成する非フッ素系樹脂の分子鎖中に、フッ素原子が組み込まれている。例えば、非フッ素系樹脂の分子鎖を-(CH2)n-で表すと、この分子鎖の一部にフッ素原子が組み込まれ、例えば-CHF-或いは-CF2-などの含フッ素部分が生成されて、撥液部材211の表面がフッ素化されるようにしている。 [Liquid repellent material]
In the present embodiment, the
撥液部材211の表面を形成する非フッ素系樹脂の分子鎖中への組み込みは、フッ素プラズマを用いたエッチングにより行うことができる。例えば、CF4ガスやSiF4ガスなどを使用し、撥液部材211(フッ素化前の撥液部材211を形成する基材)の表面を、一対の電極間に配置し、高周波電界を印加することにより、フッ素原子のプラズマ(原子状フッ素)を生成させ、これを撥液部材211の表面に衝突させることによって、フッ素原子は撥液部材211の表面を形成している非フッ素樹脂の分子鎖中に組み込まれる。すなわち、表面の樹脂が気化乃至分解し、同時に、フッ素原子が組み込まれることとなる。
従って、フッ素原子が組み込まれている領域には、エッチングにより、超微細な凹凸が形成されることとなる。この超微細な凹凸での算術平均粗さRaは、一般に、100nm以下であり、Ra/RSm≧5×10-3である。 Incorporation into the molecular chain of the non-fluorine resin forming the surface of theliquid repellent member 211 can be performed by etching using fluorine plasma. For example, CF 4 gas, SiF 4 gas, or the like is used, and the surface of the liquid repellent member 211 (a substrate on which the liquid repellent member 211 before fluorination is formed) is disposed between a pair of electrodes, and a high frequency electric field is applied. Thus, fluorine atom plasma (atomic fluorine) is generated and collided with the surface of the liquid repellent member 211, so that the fluorine atoms are molecular chains of the non-fluorine resin forming the surface of the liquid repellent member 211. Built in. That is, the resin on the surface is vaporized or decomposed, and at the same time, fluorine atoms are incorporated.
Accordingly, ultra fine irregularities are formed by etching in the region where fluorine atoms are incorporated. The arithmetic average roughness Ra of the ultra-fine irregularities is generally 100 nm or less and Ra / RSm ≧ 5 × 10 −3 .
従って、フッ素原子が組み込まれている領域には、エッチングにより、超微細な凹凸が形成されることとなる。この超微細な凹凸での算術平均粗さRaは、一般に、100nm以下であり、Ra/RSm≧5×10-3である。 Incorporation into the molecular chain of the non-fluorine resin forming the surface of the
Accordingly, ultra fine irregularities are formed by etching in the region where fluorine atoms are incorporated. The arithmetic average roughness Ra of the ultra-fine irregularities is generally 100 nm or less and Ra / RSm ≧ 5 × 10 −3 .
また、撥液部材211の表面は、必要に応じて微細な凹凸部が形成されるように粗面化することができる。例えば、レジスト法等により所望の凹凸に対応する粗面部が形成されたスタンパを適宜の温度に加熱し、これを撥液部材211の表面に押し当てて粗面部を転写することにより、撥液部材211の表面を粗面化することができる。
Further, the surface of the liquid repellent member 211 can be roughened so that fine irregularities are formed as necessary. For example, a liquid repellent member is formed by heating a stamper on which a rough surface portion corresponding to desired unevenness by a resist method or the like is heated to an appropriate temperature, and pressing this against the surface of the liquid repellent member 211 to transfer the rough surface portion. The surface of 211 can be roughened.
撥液部材211に用いる非フッ素系樹脂、すなわち、フッ素を含有していない樹脂としては、撥液部材211の表面に凹凸部を形成して粗面化でき、かつ、フッ素プラズマエッチングによりフッ素原子の分子鎖中への組み込みが可能である限り、任意の熱可塑性樹脂、熱硬化性樹脂、光硬化性樹脂などを挙げることができる。例えば、ポリエチレン、ポリプロピレン、エチレン、又はプロピレンと他のオレフィンとの共重合体等に代表されるオレフィン系樹脂、ポリエチレンテレフタレート(PET)、ポリエチレンイソフタレート、ポリエチレンナフタレート等のポリエステルが好ましく用いられる。
As the non-fluorine-based resin used for the liquid repellent member 211, that is, a resin not containing fluorine, an uneven portion can be formed on the surface of the liquid repellent member 211 to be roughened, and fluorine atoms can be removed by fluorine plasma etching. Any thermoplastic resin, thermosetting resin, photocurable resin, and the like can be used as long as the incorporation into the molecular chain is possible. For example, polyethylene, polypropylene, ethylene, or an olefin resin typified by a copolymer of propylene and another olefin, or a polyester such as polyethylene terephthalate (PET), polyethylene isophthalate, or polyethylene naphthalate is preferably used.
[撥液部材の動作原理]
以下、本実施形態における撥液部材211の動作原理について、図9及び図10を参照しつつ説明する。
本実施形態において、撥液部材211の表面に形成される粗面の形態を図9に示す。同図において、撥液部材211の表面には、微細な凹凸からなる粗面RSが形成されているとともに(図9において、粗面RS中の凸部の頂部はSで示されている)、この粗面RSを形成する非フッ素系樹脂の分子鎖中には、フッ素原子が組み込まれている。 [Operation principle of liquid repellent member]
Hereinafter, the operation principle of theliquid repellent member 211 in the present embodiment will be described with reference to FIGS. 9 and 10.
In this embodiment, the form of the rough surface formed on the surface of theliquid repellent member 211 is shown in FIG. In the figure, the surface of the liquid repellent member 211 is formed with a rough surface RS composed of fine irregularities (in FIG. 9, the top of the convex portion in the rough surface RS is indicated by S), Fluorine atoms are incorporated in the molecular chain of the non-fluorinated resin that forms the rough surface RS.
以下、本実施形態における撥液部材211の動作原理について、図9及び図10を参照しつつ説明する。
本実施形態において、撥液部材211の表面に形成される粗面の形態を図9に示す。同図において、撥液部材211の表面には、微細な凹凸からなる粗面RSが形成されているとともに(図9において、粗面RS中の凸部の頂部はSで示されている)、この粗面RSを形成する非フッ素系樹脂の分子鎖中には、フッ素原子が組み込まれている。 [Operation principle of liquid repellent member]
Hereinafter, the operation principle of the
In this embodiment, the form of the rough surface formed on the surface of the
上記のような粗面RSでの液の撥液性について、図10を参照して説明する。
図10(a)に示すように、上記のような粗面RSでの液滴Duの接触パターンは、液滴Duが粗面RS上に載ったCassieモードでは、粗面RS中の凹部がエアポケットとなっており、液滴Duは固体と気体(空気)との複合接触の状態となる。このような複合接触では、液滴Duの接触界面での接触半径Rは小さく、液滴Duと粗面の密着力は低く、疎液性が最も高い空気に液体が接触するため、高い撥液性が発現する。このようなCassieモードでの粗面RSの接触角は、以下の理論式(1)に示す通りである。
cosθ*=(1-φS)cosπ+φScosθE
=φS-1+φScosθE (1)
θE:接触角
θ*:見かけの接触角
φS:面積比(単位面積当たりの固-液界面の投影面積)
この理論式(1)から理解されるように、φSが小さいほど、見かけの接触角θ*は180度に近づき、超撥液性を示すようになる。 The liquid repellency of the liquid on the rough surface RS will be described with reference to FIG.
As shown in FIG. 10 (a), the contact pattern of the droplet Du on the rough surface RS as described above is such that in the Cassie mode in which the droplet Du is placed on the rough surface RS, the recesses in the rough surface RS are air. It is a pocket, and the droplet Du is in a composite contact state between the solid and the gas (air). In such a composite contact, the contact radius R at the contact interface of the droplet Du is small, the adhesion between the droplet Du and the rough surface is low, and the liquid comes into contact with the air having the highest lyophobic property. Sex is expressed. The contact angle of the rough surface RS in the Cassie mode is as shown in the following theoretical formula (1).
cosθ * = (1-φ S ) cosπ + φ S cosθ E
= Φ S -1 + φ S cosθ E (1)
θ E : contact angle θ * : apparent contact angle φ S : area ratio (projected area of solid-liquid interface per unit area)
As can be understood from the theoretical formula (1), the smaller the φ S , the closer the apparent contact angle θ * approaches 180 degrees and the super liquid repellency is exhibited.
図10(a)に示すように、上記のような粗面RSでの液滴Duの接触パターンは、液滴Duが粗面RS上に載ったCassieモードでは、粗面RS中の凹部がエアポケットとなっており、液滴Duは固体と気体(空気)との複合接触の状態となる。このような複合接触では、液滴Duの接触界面での接触半径Rは小さく、液滴Duと粗面の密着力は低く、疎液性が最も高い空気に液体が接触するため、高い撥液性が発現する。このようなCassieモードでの粗面RSの接触角は、以下の理論式(1)に示す通りである。
cosθ*=(1-φS)cosπ+φScosθE
=φS-1+φScosθE (1)
θE:接触角
θ*:見かけの接触角
φS:面積比(単位面積当たりの固-液界面の投影面積)
この理論式(1)から理解されるように、φSが小さいほど、見かけの接触角θ*は180度に近づき、超撥液性を示すようになる。 The liquid repellency of the liquid on the rough surface RS will be described with reference to FIG.
As shown in FIG. 10 (a), the contact pattern of the droplet Du on the rough surface RS as described above is such that in the Cassie mode in which the droplet Du is placed on the rough surface RS, the recesses in the rough surface RS are air. It is a pocket, and the droplet Du is in a composite contact state between the solid and the gas (air). In such a composite contact, the contact radius R at the contact interface of the droplet Du is small, the adhesion between the droplet Du and the rough surface is low, and the liquid comes into contact with the air having the highest lyophobic property. Sex is expressed. The contact angle of the rough surface RS in the Cassie mode is as shown in the following theoretical formula (1).
cosθ * = (1-φ S ) cosπ + φ S cosθ E
= Φ S -1 + φ S cosθ E (1)
θ E : contact angle θ * : apparent contact angle φ S : area ratio (projected area of solid-liquid interface per unit area)
As can be understood from the theoretical formula (1), the smaller the φ S , the closer the apparent contact angle θ * approaches 180 degrees and the super liquid repellency is exhibited.
一方、図10(b)に示すように、液滴Duが粗面RS中の凹部に侵入した場合には、液滴Duは上記のような複合接触ではなく、固体のみとの接触となり、Wenzelモードで示される。このようなWenzelモードでは、液滴Duの接触界面での接触半径Rは大きく、液滴Duと粗面の密着力は高い。その凹凸表面の接触角は、以下の理論式(2)に示す通りである。
cosθ*=rcosθE (2)
θE:接触角
θ*:見かけの接触角
r:凹凸度(=実接触面積/液滴の投影面積)
この理論式(2)から理解されるように、rが大きいほど、見かけの接触角θ*は180度に近づき、超撥液性を示すようになる。 On the other hand, as shown in FIG. 10B, when the liquid droplet Du enters the concave portion in the rough surface RS, the liquid droplet Du is not in contact with the composite as described above, but in contact with only the solid. Shown in mode. In such a Wenzel mode, the contact radius R at the contact interface of the droplet Du is large, and the adhesion between the droplet Du and the rough surface is high. The contact angle of the uneven surface is as shown in the following theoretical formula (2).
cosθ * = rcosθ E (2)
θ E : Contact angle θ * : Apparent contact angle r: Concavity and convexity (= actual contact area / droplet projection area)
As understood from the theoretical formula (2), as r is larger, the apparent contact angle θ * approaches 180 degrees and exhibits super-liquid repellency.
cosθ*=rcosθE (2)
θE:接触角
θ*:見かけの接触角
r:凹凸度(=実接触面積/液滴の投影面積)
この理論式(2)から理解されるように、rが大きいほど、見かけの接触角θ*は180度に近づき、超撥液性を示すようになる。 On the other hand, as shown in FIG. 10B, when the liquid droplet Du enters the concave portion in the rough surface RS, the liquid droplet Du is not in contact with the composite as described above, but in contact with only the solid. Shown in mode. In such a Wenzel mode, the contact radius R at the contact interface of the droplet Du is large, and the adhesion between the droplet Du and the rough surface is high. The contact angle of the uneven surface is as shown in the following theoretical formula (2).
cosθ * = rcosθ E (2)
θ E : Contact angle θ * : Apparent contact angle r: Concavity and convexity (= actual contact area / droplet projection area)
As understood from the theoretical formula (2), as r is larger, the apparent contact angle θ * approaches 180 degrees and exhibits super-liquid repellency.
ここで、撥液性については、上記の通り、WenzelモードとCassieモードのいずれの状態においても撥液性が向上することが知られているが、粗面RSと液滴Duとの密着力を低減させ、少量の液滴Duを滴下させるには、Wenzelモードではなく、Cassieモードを安定的に維持すること、すなわち、凹部のエアポケットを安定に維持することが必要であると考えられる。
すなわち、Wenzelモードでは、液相と固相の界面が大きく、その結果、界面に働く物理的な吸着力も大きくなるため、接触角は大きく撥液はしているが、液滴Duが容易に滴下・転落することはない。
これに対して、Cassieモードでは、界面が小さいため、液滴Duが滴下する際乗り越えなければならない密着力が低く、容易に滴下・転落し、何度でも繰り返し滴下すると考えられる。 Here, with regard to the liquid repellency, as described above, it is known that the liquid repellency is improved in both the Wenzel mode and the Cassie mode, but the adhesion between the rough surface RS and the droplet Du is improved. In order to reduce and drop a small amount of droplets Du, it is considered necessary to stably maintain the Cassie mode, not the Wenzel mode, that is, to stably maintain the air pockets of the recesses.
That is, in the Wenzel mode, the interface between the liquid phase and the solid phase is large, and as a result, the physical adsorption force acting on the interface also increases, so that the contact angle is large and the liquid repellent, but the droplet Du easily drops.・ It will not fall.
On the other hand, in the Cassie mode, since the interface is small, the adhesion force that must be overcome when the droplet Du is dropped is low, and the droplet is easily dropped and tumbled.
すなわち、Wenzelモードでは、液相と固相の界面が大きく、その結果、界面に働く物理的な吸着力も大きくなるため、接触角は大きく撥液はしているが、液滴Duが容易に滴下・転落することはない。
これに対して、Cassieモードでは、界面が小さいため、液滴Duが滴下する際乗り越えなければならない密着力が低く、容易に滴下・転落し、何度でも繰り返し滴下すると考えられる。 Here, with regard to the liquid repellency, as described above, it is known that the liquid repellency is improved in both the Wenzel mode and the Cassie mode, but the adhesion between the rough surface RS and the droplet Du is improved. In order to reduce and drop a small amount of droplets Du, it is considered necessary to stably maintain the Cassie mode, not the Wenzel mode, that is, to stably maintain the air pockets of the recesses.
That is, in the Wenzel mode, the interface between the liquid phase and the solid phase is large, and as a result, the physical adsorption force acting on the interface also increases, so that the contact angle is large and the liquid repellent, but the droplet Du easily drops.・ It will not fall.
On the other hand, in the Cassie mode, since the interface is small, the adhesion force that must be overcome when the droplet Du is dropped is low, and the droplet is easily dropped and tumbled.
そこで、本実施形態においては、上記のCassieモードでの液滴Duの接触を有効に維持するために、ノズル210の先端部211の粗面RSを形成している非フッ素系樹脂の分子鎖中にフッ素原子を組み込むことにより、化学的に撥液性を付与するようにしている。
すなわち、粗面RS中の凹部に液体が侵入してしまうと、液滴Duの接触パターンはWenzelモードとなってしまい、この結果、Cassieモードによる超撥液性は損なわれてしまうが、本実施形態では、粗面RSを形成する非フッ素系樹脂の分子鎖中にフッ素原子を組み込むことにより、粗面RSに対して化学的に撥液性を付与することができ、これによって凹部内への液体の侵入が有効に抑制され、Cassieモードによる超撥液性が安定に維持されることとなる。 Therefore, in the present embodiment, in order to effectively maintain the contact of the droplet Du in the above Cassie mode, the molecular chain of the non-fluorine resin forming the rough surface RS of thetip portion 211 of the nozzle 210 is used. Incorporation of fluorine atoms into the liquid provides chemical liquid repellency.
That is, if the liquid enters the concave portion in the rough surface RS, the contact pattern of the droplet Du becomes the Wenzel mode. As a result, the super-liquid repellency by the Cassie mode is impaired. In the embodiment, by incorporating fluorine atoms into the molecular chain of the non-fluorine resin that forms the rough surface RS, the liquid repellency can be chemically imparted to the rough surface RS, and thereby into the recess. The penetration of the liquid is effectively suppressed, and the super liquid repellency by the Cassie mode is stably maintained.
すなわち、粗面RS中の凹部に液体が侵入してしまうと、液滴Duの接触パターンはWenzelモードとなってしまい、この結果、Cassieモードによる超撥液性は損なわれてしまうが、本実施形態では、粗面RSを形成する非フッ素系樹脂の分子鎖中にフッ素原子を組み込むことにより、粗面RSに対して化学的に撥液性を付与することができ、これによって凹部内への液体の侵入が有効に抑制され、Cassieモードによる超撥液性が安定に維持されることとなる。 Therefore, in the present embodiment, in order to effectively maintain the contact of the droplet Du in the above Cassie mode, the molecular chain of the non-fluorine resin forming the rough surface RS of the
That is, if the liquid enters the concave portion in the rough surface RS, the contact pattern of the droplet Du becomes the Wenzel mode. As a result, the super-liquid repellency by the Cassie mode is impaired. In the embodiment, by incorporating fluorine atoms into the molecular chain of the non-fluorine resin that forms the rough surface RS, the liquid repellency can be chemically imparted to the rough surface RS, and thereby into the recess. The penetration of the liquid is effectively suppressed, and the super liquid repellency by the Cassie mode is stably maintained.
特に、本実施形態では、粗面RSの少なくとも一部分、例えば、凸部の頂部や凹部の底部において、この面を形成する非フッ素系樹脂の分子鎖中に、化学的撥液性を発現させるためのフッ素原子が組み込まれるようになっている。このため、この粗面RSに液が繰り返し接触した場合にも、このフッ素原子が取り除かれることはなく、化学的撥液性が安定して維持され、結果として、Cassieモードによる超撥液性が低下することなく、初期段階と同様に高いレベルに維持されるようになる。
さらに、フッ素原子を含む膜を形成するのではなく、表面の非フッ素系樹脂の分子鎖中にフッ素原子を組み込んでいるため、剥離や脱落などによる異物混入の問題も一切生じない。 In particular, in this embodiment, at least a part of the rough surface RS, for example, at the top of the convex portion or the bottom of the concave portion, the chemical liquid repellency is expressed in the molecular chain of the non-fluorine resin forming this surface. The fluorine atom is incorporated. For this reason, even when the liquid repeatedly contacts the rough surface RS, the fluorine atoms are not removed and the chemical liquid repellency is stably maintained. As a result, the super liquid repellency by the Cassie mode is maintained. Without being lowered, the high level is maintained as in the initial stage.
Furthermore, since a fluorine atom is incorporated into the molecular chain of the non-fluorine resin on the surface instead of forming a film containing fluorine atoms, there is no problem of contamination due to peeling or dropping.
さらに、フッ素原子を含む膜を形成するのではなく、表面の非フッ素系樹脂の分子鎖中にフッ素原子を組み込んでいるため、剥離や脱落などによる異物混入の問題も一切生じない。 In particular, in this embodiment, at least a part of the rough surface RS, for example, at the top of the convex portion or the bottom of the concave portion, the chemical liquid repellency is expressed in the molecular chain of the non-fluorine resin forming this surface. The fluorine atom is incorporated. For this reason, even when the liquid repeatedly contacts the rough surface RS, the fluorine atoms are not removed and the chemical liquid repellency is stably maintained. As a result, the super liquid repellency by the Cassie mode is maintained. Without being lowered, the high level is maintained as in the initial stage.
Furthermore, since a fluorine atom is incorporated into the molecular chain of the non-fluorine resin on the surface instead of forming a film containing fluorine atoms, there is no problem of contamination due to peeling or dropping.
ここで、上記のような粗面RSの凹凸の程度は、Cassieモードによる撥液性が十分に発揮されるように、粗面RS中の単位面積当たりの凸部頂部Sの面積で表される面積比φsが0.05以上、好ましくは0.08以上の範囲にあることが好ましい。
さらに、成形性や機械的強度の観点から、面積比Φは0.8以下、特に0.5以下の範囲にあることが好ましい。
また、粗面RSにおける深さdは、5~200μm、特に10~50μmの範囲にあることが好適である。 Here, the degree of unevenness of the rough surface RS as described above is represented by the area of the convex portion top S per unit area in the rough surface RS so that the liquid repellency by the Cassie mode is sufficiently exhibited. It is preferable that the area ratio φs is 0.05 or more, preferably 0.08 or more.
Furthermore, from the viewpoint of moldability and mechanical strength, the area ratio Φ is preferably in the range of 0.8 or less, particularly 0.5 or less.
The depth d in the rough surface RS is preferably in the range of 5 to 200 μm, particularly 10 to 50 μm.
さらに、成形性や機械的強度の観点から、面積比Φは0.8以下、特に0.5以下の範囲にあることが好ましい。
また、粗面RSにおける深さdは、5~200μm、特に10~50μmの範囲にあることが好適である。 Here, the degree of unevenness of the rough surface RS as described above is represented by the area of the convex portion top S per unit area in the rough surface RS so that the liquid repellency by the Cassie mode is sufficiently exhibited. It is preferable that the area ratio φs is 0.05 or more, preferably 0.08 or more.
Furthermore, from the viewpoint of moldability and mechanical strength, the area ratio Φ is preferably in the range of 0.8 or less, particularly 0.5 or less.
The depth d in the rough surface RS is preferably in the range of 5 to 200 μm, particularly 10 to 50 μm.
本実施形態において、撥液部材211の表面に形成される粗面は、図9に示した粗面RSの凹凸形状に限定されないが、エアポケットを安定に形成するという観点からは、図9に示したような凸部及び凹部が矩形状に形成されていることが好ましい。例えば、凹部がV字形状のような形態となっていると、液滴Duが凹部内に入り込みやすくなるからである。
また、撥液部材211の表面は、フッ素化され、かつ、先端部211の表面が粗面化されることが、撥液性を向上させることから好ましいが、撥液部材211の表面は、少なくともフッ素化されていれば、撥液性能を発揮することができる。また、前述したように、撥液部材211の表面をフッ素化するためのプラズマ処理は、非常にアタック性の強いもので、プラズマ処理によって撥液部材211の表面には微細な凹凸が形成されて粗面化される。
従って、撥液部材211の表面は、少なくともフッ素化されていればよく、必要に応じて、さらに先端部211の表面を粗面化するものであれば良い。 In this embodiment, the rough surface formed on the surface of theliquid repellent member 211 is not limited to the uneven shape of the rough surface RS shown in FIG. 9, but from the viewpoint of stably forming the air pockets, FIG. It is preferable that the convex part and the concave part as shown are formed in a rectangular shape. For example, if the recess has a V-shaped form, the droplet Du can easily enter the recess.
Further, it is preferable that the surface of theliquid repellent member 211 is fluorinated and the surface of the tip end portion 211 is roughened in order to improve the liquid repellency, but the surface of the liquid repellent member 211 is at least If fluorinated, liquid repellency can be exhibited. In addition, as described above, the plasma treatment for fluorinating the surface of the liquid repellent member 211 is very strong in attack, and fine irregularities are formed on the surface of the liquid repellent member 211 by the plasma treatment. Roughened.
Therefore, the surface of theliquid repellent member 211 only needs to be at least fluorinated, and may be any surface that further roughens the surface of the tip portion 211 as necessary.
また、撥液部材211の表面は、フッ素化され、かつ、先端部211の表面が粗面化されることが、撥液性を向上させることから好ましいが、撥液部材211の表面は、少なくともフッ素化されていれば、撥液性能を発揮することができる。また、前述したように、撥液部材211の表面をフッ素化するためのプラズマ処理は、非常にアタック性の強いもので、プラズマ処理によって撥液部材211の表面には微細な凹凸が形成されて粗面化される。
従って、撥液部材211の表面は、少なくともフッ素化されていればよく、必要に応じて、さらに先端部211の表面を粗面化するものであれば良い。 In this embodiment, the rough surface formed on the surface of the
Further, it is preferable that the surface of the
Therefore, the surface of the
[ノズル先端部の構造]
図8に示す例において、ノズル210の先端側には、ノズル210の開口部210aと同径・同軸に開口211aが穿設された撥液部材211が取り付けられており、かかる撥液部材211が、ノズル210の先端部を構成するようにしている。
ノズル210の先端側に撥液部材211を取り付けるには、例えば、撥液部材211をインサート材としてインモールド成形によりノズル210を成形することによって取り付けてもよく、超音波融着、熱融着、接着剤、嵌合などの適宜手段によって取り付けるようにしてもよく、脱着可能としてもよい。 [Nozzle tip structure]
In the example shown in FIG. 8, aliquid repellent member 211 having an opening 211 a drilled in the same diameter and the same axis as the opening 210 a of the nozzle 210 is attached to the tip side of the nozzle 210. The tip of the nozzle 210 is configured.
In order to attach theliquid repellent member 211 to the front end side of the nozzle 210, for example, the liquid repellent member 211 may be attached by forming the nozzle 210 by in-mold molding using the insert material as an insert material, ultrasonic fusion, thermal fusion, It may be attached by appropriate means such as an adhesive or fitting, or may be removable.
図8に示す例において、ノズル210の先端側には、ノズル210の開口部210aと同径・同軸に開口211aが穿設された撥液部材211が取り付けられており、かかる撥液部材211が、ノズル210の先端部を構成するようにしている。
ノズル210の先端側に撥液部材211を取り付けるには、例えば、撥液部材211をインサート材としてインモールド成形によりノズル210を成形することによって取り付けてもよく、超音波融着、熱融着、接着剤、嵌合などの適宜手段によって取り付けるようにしてもよく、脱着可能としてもよい。 [Nozzle tip structure]
In the example shown in FIG. 8, a
In order to attach the
撥液部材211は、ノズル210よりも小さな部材であるため、フッ素化・粗面化する際の搬送効率が向上するとともに、処理装置を小型化でき、同時にフッ素化・粗面化できる数を増やすこともできる。また、フィルム状又はシート状の基材をフッ素化・粗面化した後に、これを打ち抜いて撥液部材211を作製することもできる。
従って、ノズル210の先端側に撥液部材211を取り付けて、かかる撥液部材211によってノズル210の先端部が構成されるようにすることで、ノズル先端部の撥液性を簡便に高めることができる。 Since theliquid repellent member 211 is a member smaller than the nozzle 210, the conveyance efficiency during fluorination / roughening can be improved, the processing apparatus can be downsized, and the number of fluorinated / roughening at the same time can be increased. You can also. Alternatively, the lyophobic member 211 can be manufactured by punching a film-like or sheet-like base material and then punching it.
Therefore, by attaching theliquid repellent member 211 to the tip end side of the nozzle 210 so that the tip end portion of the nozzle 210 is constituted by the liquid repellent member 211, the liquid repellency of the nozzle tip portion can be easily improved. it can.
従って、ノズル210の先端側に撥液部材211を取り付けて、かかる撥液部材211によってノズル210の先端部が構成されるようにすることで、ノズル先端部の撥液性を簡便に高めることができる。 Since the
Therefore, by attaching the
その結果、容器本体202から注出される液体(目薬)がノズル210の先端部に対して広範囲に濡れることを防ぎ、開口部210aの内径を調整・設定することで、ノズル210から注出される液体の滴下量を任意に設定することができる。
すなわち、図11に示すように、先端部の撥液性が高められたノズル210から注出される液滴Duはノズル先端に濡れ拡がることなく、ほぼ球体状となる。そして、液滴Duとノズル先端の密着力より液滴Duの重量が上回ったタイミングで、液滴Duはノズル表面から離脱して転落・滴下されるようになる。液滴Duは濡れ拡がっていないので密着力は小さく、滴下する液滴Duは少量となる。また、ノズル210の開口部210aの内径を所定の寸法(例えば0.5mm以下)に設定することで、所望の滴下量(例えば10μL以下)の液滴Duを注出・滴下させることができる。 As a result, the liquid (eye drops) poured out from thecontainer body 202 is prevented from getting wet to the tip of the nozzle 210 over a wide range, and the liquid poured out from the nozzle 210 is adjusted and set in the inner diameter of the opening 210a. The dripping amount of can be arbitrarily set.
That is, as shown in FIG. 11, the liquid droplets Du poured out from thenozzle 210 with improved liquid repellency at the tip end are substantially spherical without spreading over the nozzle tip. Then, at the timing when the weight of the droplet Du exceeds the adhesion force between the droplet Du and the nozzle tip, the droplet Du separates from the nozzle surface and falls and drops. Since the droplets Du are not wet and spread, the adhesion is small, and the amount of droplets Du dropped is small. Moreover, by setting the inner diameter of the opening 210a of the nozzle 210 to a predetermined dimension (for example, 0.5 mm or less), a desired amount (for example, 10 μL or less) of the droplet Du can be poured out and dropped.
すなわち、図11に示すように、先端部の撥液性が高められたノズル210から注出される液滴Duはノズル先端に濡れ拡がることなく、ほぼ球体状となる。そして、液滴Duとノズル先端の密着力より液滴Duの重量が上回ったタイミングで、液滴Duはノズル表面から離脱して転落・滴下されるようになる。液滴Duは濡れ拡がっていないので密着力は小さく、滴下する液滴Duは少量となる。また、ノズル210の開口部210aの内径を所定の寸法(例えば0.5mm以下)に設定することで、所望の滴下量(例えば10μL以下)の液滴Duを注出・滴下させることができる。 As a result, the liquid (eye drops) poured out from the
That is, as shown in FIG. 11, the liquid droplets Du poured out from the
また、ノズル先端部の撥液性を高くしても、注出される液滴の滴下量にばらつきが生じる場合がある。
図12は、滴下量のばらつきを模式的に示す説明図である。ノズル210から滴下される液滴Duは、正常な場合には図11に示すように、ノズル先端の開口の中心で球体状となり、液滴Duが一定重量に至った時点でノズル先端から離脱して落下・滴下されるようになる。 Moreover, even if the liquid repellency at the nozzle tip is increased, there may be variations in the amount of droplets dispensed.
FIG. 12 is an explanatory diagram schematically showing variation in the amount of dripping. As shown in FIG. 11, the droplet Du dropped from thenozzle 210 has a spherical shape at the center of the opening at the tip of the nozzle, and is detached from the tip of the nozzle when the droplet Du reaches a certain weight. Will drop and drip.
図12は、滴下量のばらつきを模式的に示す説明図である。ノズル210から滴下される液滴Duは、正常な場合には図11に示すように、ノズル先端の開口の中心で球体状となり、液滴Duが一定重量に至った時点でノズル先端から離脱して落下・滴下されるようになる。 Moreover, even if the liquid repellency at the nozzle tip is increased, there may be variations in the amount of droplets dispensed.
FIG. 12 is an explanatory diagram schematically showing variation in the amount of dripping. As shown in FIG. 11, the droplet Du dropped from the
ところが、ノズル先端部の撥液性に偏りがある場合には、ノズル210から注出される液滴Duは、より撥液性の低い側に移動し、例えば図12(a)に示すように、ノズル開口の中心から偏った状態となってしまう。このような状態では、正常な場合と比較して液滴Duが大きくなるため、滴下される滴下量も、本来の正常な場合よりも大きなものとなってしまう。
また、液体をノズルから注出させる際に、液体中に気泡が発生・混入する、所謂エアの噛み込みが発生する場合がある。このようなエアの噛み込みがあると、ノズル210から注出される液滴Duは、例えば図12(b)に示すように、液量の異なる複数の液滴Duに分離されてしまい、これら複数の液滴Duが個別に又は一体となって滴下されることで、本来の正常な場合とは異なる滴下量となってしまうことがある。 However, when the liquid repellency of the nozzle tip is uneven, the liquid droplet Du ejected from thenozzle 210 moves to a lower liquid repellency side, for example, as shown in FIG. The state is deviated from the center of the nozzle opening. In such a state, since the droplet Du becomes larger than in the normal case, the amount of the dropped droplet is also larger than in the original normal case.
Further, when the liquid is poured out from the nozzle, so-called air entrapment, in which bubbles are generated and mixed in the liquid, may occur. When such air is caught, the liquid droplet Du discharged from thenozzle 210 is separated into a plurality of liquid droplets Du having different liquid amounts as shown in FIG. 12B, for example. The droplets Du may be dropped individually or integrally, resulting in a drop amount different from the original normal case.
また、液体をノズルから注出させる際に、液体中に気泡が発生・混入する、所謂エアの噛み込みが発生する場合がある。このようなエアの噛み込みがあると、ノズル210から注出される液滴Duは、例えば図12(b)に示すように、液量の異なる複数の液滴Duに分離されてしまい、これら複数の液滴Duが個別に又は一体となって滴下されることで、本来の正常な場合とは異なる滴下量となってしまうことがある。 However, when the liquid repellency of the nozzle tip is uneven, the liquid droplet Du ejected from the
Further, when the liquid is poured out from the nozzle, so-called air entrapment, in which bubbles are generated and mixed in the liquid, may occur. When such air is caught, the liquid droplet Du discharged from the
これに対処するために、ノズル210の先端部表面を、ノズル中心側に位置する第一の表面と、第一の表面の外周側に連続する第二の表面との2種類(2段階)の表面構成として、第一の表面と第二の表面とが異なる表面自由エネルギーを有する、すなわち、第二の表面が第一の表面よりも高い撥液性を有するように構成することができる。
ここで、撥液性としては、例えば対象となる液体(水など)を水平な搭載面に載せたときに、搭載面と液体表面の接線とのなす角度である「接触角」をθEとした場合に、θE≧90°であれば、その搭載面は対象となる液体について撥液性が「高い」(低エネルギー表面)ということになり、θE<90°であれば、撥液性が「低い」(高エネルギー表面)ということになる。 In order to cope with this, the tip surface of thenozzle 210 is divided into two types (two steps): a first surface located on the nozzle center side and a second surface continuous to the outer peripheral side of the first surface. As the surface configuration, the first surface and the second surface can have different surface free energies, that is, the second surface can have a higher liquid repellency than the first surface.
Here, as the liquid repellency, for example, when a target liquid (such as water) is placed on a horizontal mounting surface, a “contact angle” that is an angle formed by a tangent line between the mounting surface and the liquid surface is θ E. In this case, if θ E ≧ 90 °, the mounting surface is “high” (low energy surface) for the target liquid, and if θ E <90 °, the liquid repellency The property is “low” (high energy surface).
ここで、撥液性としては、例えば対象となる液体(水など)を水平な搭載面に載せたときに、搭載面と液体表面の接線とのなす角度である「接触角」をθEとした場合に、θE≧90°であれば、その搭載面は対象となる液体について撥液性が「高い」(低エネルギー表面)ということになり、θE<90°であれば、撥液性が「低い」(高エネルギー表面)ということになる。 In order to cope with this, the tip surface of the
Here, as the liquid repellency, for example, when a target liquid (such as water) is placed on a horizontal mounting surface, a “contact angle” that is an angle formed by a tangent line between the mounting surface and the liquid surface is θ E. In this case, if θ E ≧ 90 °, the mounting surface is “high” (low energy surface) for the target liquid, and if θ E <90 °, the liquid repellency The property is “low” (high energy surface).
例えば、図13に示すように、ノズル210の開口部210aの周縁に沿って突出する突部210bを形成するとともに、突部210bの外径と同径・同軸に開口211aが穿設された撥液部材211が、突部210bの周囲に配されるようにしてノズル210の先端側に取り付けられており、かかる撥液部材211によって、ノズル210の先端部の一部が構成されるようにすることができる(図13(b)参照)。
これによって、突部210bの先端面をノズル中心側に位置する第一の表面S1とし、撥液性が低い高エネルギー表面とすることができる。そして、フッ素化・粗面化された撥液部材211の表面を、第一の表面の外周側に連続する第二の表面S2とし、第一の表面S1よりも表面自由エネルギーの低い面(撥液性が高い低エネルギー面)とすることができる。 For example, as shown in FIG. 13, aprotrusion 210b that protrudes along the periphery of the opening 210a of the nozzle 210 is formed, and an opening 211a is formed with the same diameter and the same diameter as the outer diameter of the protrusion 210b. The liquid member 211 is attached to the front end side of the nozzle 210 so as to be arranged around the protrusion 210b, and the liquid repellent member 211 constitutes a part of the front end portion of the nozzle 210. (See FIG. 13B).
Thus, the tip surface of theprotrusion 210b can be the first surface S1 positioned on the nozzle center side, and can be a high energy surface with low liquid repellency. Then, the surface of the liquid repellent member 211 that has been fluorinated and roughened is defined as a second surface S2 that is continuous to the outer peripheral side of the first surface, and a surface having a surface free energy lower than that of the first surface S1 (repellency). Low energy surface with high liquidity).
これによって、突部210bの先端面をノズル中心側に位置する第一の表面S1とし、撥液性が低い高エネルギー表面とすることができる。そして、フッ素化・粗面化された撥液部材211の表面を、第一の表面の外周側に連続する第二の表面S2とし、第一の表面S1よりも表面自由エネルギーの低い面(撥液性が高い低エネルギー面)とすることができる。 For example, as shown in FIG. 13, a
Thus, the tip surface of the
その結果、第二の表面S2に撥液性のばらつきがあってもその影響を受けず、また、エアの噛み込みが生じた場合にも液滴が第二の表面S2側に分離・分散することもなく、図14に示すように、液滴は必ずノズル210の開口中心に形成されるように誘導され、液滴の偏りやばらつきが生じることなく、確実かつ安定した注出・滴下を行わせることができる。
As a result, even if there is a variation in liquid repellency on the second surface S2, it is not affected, and even when air is caught, droplets are separated and dispersed on the second surface S2 side. As shown in FIG. 14, the liquid droplet is always guided to be formed at the center of the opening of the nozzle 210, and the liquid is surely and stably dispensed and dropped without causing any deviation or dispersion of the liquid droplet. Can be made.
また、容器本体202に貯留された内容液を滴下する際には、容器本体202を押圧して、その内圧を上昇させて内容液を滴下するが、図13(b)に示すようにして撥液部材211をノズル210に取り付けると、撥液部材211は内圧を直接受けることがないので、内圧上昇に伴う撥液部材211の脱離を防ぐことができる。また、より強固に脱離を防ぐため、接着剤を介して、撥液部材211をノズル210に取り付けた場合でも、接着界面と内容物の注出経路を隔離することができるので、接着剤のコンタミネーションを完全に防ぐことができる。また、ノズル210に嵌合部211を設けて脱着可能とし、撥液部材を交換可能にしてもよい。これらは、本発明の大きな作用効果の一つである。
When the content liquid stored in the container main body 202 is dropped, the content liquid is dropped by pressing the container main body 202 to increase its internal pressure. However, as shown in FIG. When the liquid member 211 is attached to the nozzle 210, the liquid repellent member 211 does not directly receive the internal pressure, so that the liquid repellent member 211 can be prevented from being detached due to an increase in internal pressure. Also, in order to prevent detachment more firmly, even when the liquid repellent member 211 is attached to the nozzle 210 via an adhesive, the adhesive interface and the content extraction path can be isolated, so that the adhesive Contamination can be completely prevented. Moreover, the fitting part 211 may be provided in the nozzle 210 so as to be removable, and the liquid repellent member may be replaceable. These are one of the great effects of the present invention.
以上、本発明について、第二実施形態を示して説明したが、本実施形態によれば、液滴下ノズルの先端側に撥液部材を取り付けて、撥液部材によって液滴下ノズルの先端部の少なくとも一部が構成されるようにすることで、ノズル先端部の撥液性を簡便に高めて、滴下量の少量化を実現することができる。
このような本発明の第二実施形態に係る注出具は、目薬の点眼用容器の液滴下ノズルとして好適に利用することができるが、上述した実施形態にのみ限定されるものではなく、本発明の範囲で種々の変更実施が可能であることは言うまでもない。 As described above, the present invention has been described with reference to the second embodiment. However, according to this embodiment, a liquid repellent member is attached to the tip side of the droplet lowering nozzle, and at least the tip of the droplet lowering nozzle is formed by the liquid repellent member. By constituting a part, it is possible to easily improve the liquid repellency at the nozzle tip and to reduce the amount of dripping.
Such a dispensing tool according to the second embodiment of the present invention can be suitably used as a droplet lower nozzle of an eye drop container, but is not limited to the above-described embodiment, and the present invention. It goes without saying that various modifications can be made within the range described above.
このような本発明の第二実施形態に係る注出具は、目薬の点眼用容器の液滴下ノズルとして好適に利用することができるが、上述した実施形態にのみ限定されるものではなく、本発明の範囲で種々の変更実施が可能であることは言うまでもない。 As described above, the present invention has been described with reference to the second embodiment. However, according to this embodiment, a liquid repellent member is attached to the tip side of the droplet lowering nozzle, and at least the tip of the droplet lowering nozzle is formed by the liquid repellent member. By constituting a part, it is possible to easily improve the liquid repellency at the nozzle tip and to reduce the amount of dripping.
Such a dispensing tool according to the second embodiment of the present invention can be suitably used as a droplet lower nozzle of an eye drop container, but is not limited to the above-described embodiment, and the present invention. It goes without saying that various modifications can be made within the range described above.
例えば、上述した実施形態では、本発明に係る注出具の適用対象として目薬の点眼用容器を例にとって説明したが、本発明の適用対象は、点眼用容器に限定されるものではない。すなわち、各種の液体を、所定量ずつ滴下させることが望まれる容器又は装置の注出口部に装着されて、滴下量の少量化を実現することができ、目薬以外の薬品用の容器、醤油やソースなどの調味料用の容器、洗剤や化粧品などの化学製品用の容器等の各種の容器や、チェーンや軸受などの機械の駆動系に定期的に少量ずつ潤滑油を供給するための給油装置、スピンコーターなどに用いられる塗布装置等の各種の装置のノズルとして用いることが可能である。
For example, in the above-described embodiment, the eye drop container for eye drops is described as an example of the application target of the dispensing tool according to the present invention. However, the application target of the present invention is not limited to the eye drop container. That is, various liquids can be mounted on a spout part of a container or device that is desired to be dripped by a predetermined amount, and the dripping amount can be reduced. Containers for chemicals other than eye drops, soy sauce, Lubricating equipment for periodically supplying small amounts of lubricating oil to various containers such as containers for seasonings such as sauces, containers for chemical products such as detergents and cosmetics, and drive systems of machines such as chains and bearings Further, it can be used as a nozzle of various apparatuses such as a coating apparatus used for a spin coater or the like.
また、上述した実施形態では、表面がフッ素化・粗面化されて撥液性が付与された撥液部材を用いているが、撥液部材はこれに限定されない。例えば、シリコーンオイルなどの撥液性物質を表面に塗布することによって撥液性が付与されたものであってもよく、疎水性シリカなどの疎水性酸化物微粒子を表面に付着することによって撥液性が付与されたものであってもよい。また、ポリテトラフルオロエチレンなどのフッ素系樹脂により撥液部材を形成することで、その表面が撥液性を発揮するようにすることもできる。
Further, in the above-described embodiment, the liquid repellent member whose surface is fluorinated and roughened to impart liquid repellency is used, but the liquid repellent member is not limited to this. For example, liquid repellency may be imparted by applying a liquid repellency substance such as silicone oil to the surface, or liquid repellency by attaching hydrophobic oxide fine particles such as hydrophobic silica to the surface. The thing to which the property was provided may be sufficient. Further, by forming the liquid repellent member with a fluorine-based resin such as polytetrafluoroethylene, the surface thereof can exhibit liquid repellency.
この明細書に記載の文献及び本願のパリ優先権の基礎となる日本出願明細書の内容を全てここに援用する。
All the contents of the documents described in this specification and the content of the Japanese application that forms the basis of the Paris priority of the present application are incorporated herein.
101 注出具
102 注出口部
102a 開口部
121 筒状主部
122 撥液部材
122a 張り出し部
122b 係合段部
201 点眼用容器
202 容器本体
210 ノズル(注出具)
210a 開口部
210b 突部
211 撥液部材
RS 粗面(凹凸形状)
sRS 補助用凹凸形状
S1 第一の表面
S2 第二の表面 DESCRIPTION OFSYMBOLS 101 Pouring tool 102 Pouring part 102a Opening part 121 Tubular main part 122 Liquid repellent member 122a Overhang part 122b Engagement step part 201 Eye drop container 202 Container main body 210 Nozzle (pouring tool)
210a Opening 210b Protruding portion 211 Liquid repellent member RS Rough surface (uneven shape)
sRS Concave and convex shape for auxiliary S1 First surface S2 Second surface
102 注出口部
102a 開口部
121 筒状主部
122 撥液部材
122a 張り出し部
122b 係合段部
201 点眼用容器
202 容器本体
210 ノズル(注出具)
210a 開口部
210b 突部
211 撥液部材
RS 粗面(凹凸形状)
sRS 補助用凹凸形状
S1 第一の表面
S2 第二の表面 DESCRIPTION OF
sRS Concave and convex shape for auxiliary S1 First surface S2 Second surface
Claims (11)
- 内容液が注出される開口部の周囲の少なくとも一部に、撥液部材が取り付けられており、
前記開口部の周囲の少なくとも一部が、前記撥液部材によって形成されていることを特徴とする注出具。 A liquid repellent member is attached to at least a part of the periphery of the opening through which the content liquid is poured,
At least a part of the periphery of the opening is formed by the liquid repellent member. - 前記撥液部材が非フッ素系樹脂からなり、
前記撥液部材の表面を形成する非フッ素系樹脂の分子鎖中に、フッ素原子が組み込まれている請求項1に記載の注出具。 The liquid repellent member is made of a non-fluorine resin,
The extraction tool according to claim 1, wherein a fluorine atom is incorporated in a molecular chain of a non-fluorine resin that forms a surface of the liquid repellent member. - 前記撥液部材の表面構造が、凹凸形状を有する請求項1又は2に記載の注出具。 The pouring tool according to claim 1 or 2, wherein the surface structure of the liquid repellent member has an uneven shape.
- 前記凹凸形状の表面の少なくとも一部が、前記凹凸形状より小さな補助用凹凸形状を有する請求項3に記載の注出具。 The extraction tool according to claim 3, wherein at least a part of the uneven surface has an auxiliary uneven shape smaller than the uneven shape.
- 内容液の注ぎ口となる注出口部を備え、
前記注出口部に設けられた前記開口部の周囲の少なくとも内容液が通過する天面を含む部分に、前記撥液部材が取り付けられており、
前記注出口部の天面側の少なくとも一部が、前記撥液部材によって形成されている請求項1~4のいずれか一項に記載の注出具。 Equipped with a spout part that serves as a spout for the liquid content,
The liquid repellent member is attached to a portion including at least the top surface around which the content liquid passes around the opening provided in the spout portion,
The pouring tool according to any one of claims 1 to 4, wherein at least a part of the top surface side of the pouring port portion is formed by the liquid repellent member. - 前記注出口部が筒状に立ち上がる筒状主部を有し、
前記撥液部材が、前記筒状主部の外周面に対して外方に突出する張り出し部を有するとともに、前記張り出し部を除く部位において、前記筒状主部の開口側端縁部に接合されている請求項5に記載の注出具。 The spout portion has a cylindrical main portion that rises in a cylindrical shape,
The liquid repellent member has a protruding portion that protrudes outward with respect to the outer peripheral surface of the cylindrical main portion, and is joined to the opening-side edge of the cylindrical main portion at a portion other than the protruding portion. The extraction tool according to claim 5. - 前記撥液部材が、内径が前記筒状主部の内径と同径の環状に形成されて、前記撥液部材の内周面と前記筒状主部の内周面とが面一とされているとともに、前記撥液部材の内周面側には、前記筒状主部の開口側端縁部と係合する係合段部が形成されている請求項6に記載の注出具。 The liquid repellent member is formed in an annular shape having an inner diameter that is the same as the inner diameter of the cylindrical main portion, and the inner peripheral surface of the liquid repellent member and the inner peripheral surface of the cylindrical main portion are flush with each other. The extraction tool according to claim 6, wherein an engagement step portion is formed on the inner peripheral surface side of the liquid repellent member so as to engage with an opening side edge portion of the cylindrical main portion.
- 前記筒状主部の開口側端縁部が、前記筒状主部の外周面側に向かって下るように傾斜するテーパー状に形成されているとともに、前記撥液部材の内周面側には、前記筒状主部の開口側端縁部と当接するテーパー曲面部が形成されている請求項7に記載の注出具。 An opening side edge of the cylindrical main portion is formed in a tapered shape so as to be inclined toward the outer peripheral surface side of the cylindrical main portion, and on the inner peripheral surface side of the liquid repellent member The extraction tool according to claim 7, wherein a tapered curved surface portion that comes into contact with the opening side edge portion of the cylindrical main portion is formed.
- 前記開口部が開口する先端側に、前記撥液部材が取り付けられており、
前記撥液部材が、先端部の少なくとも一部を構成している請求項1~4のいずれか一項に記載の注出具。 The liquid repellent member is attached to the tip side where the opening opens,
The dispensing tool according to any one of claims 1 to 4, wherein the liquid repellent member constitutes at least a part of a tip portion. - 前記先端部表面が、
中心側に位置する第一の表面と、この第一の表面の外周側に連続する第二の表面とを備え、
前記第一の表面と前記第二の表面とが、表面自由エネルギーの異なる表面からなる請求項9に記載の注出具。 The tip surface is
A first surface located on the center side, and a second surface continuous to the outer peripheral side of the first surface,
The extraction tool according to claim 9, wherein the first surface and the second surface are surfaces having different surface free energies. - 前記開口部の周縁に沿って突出する突部が形成され、
前記撥液部材が、前記突部の周囲に配されるように取り付けられて、前記先端部の一部を構成し、
前記突部の先端面を前記第一の表面とし、前記撥液部材の表面を前記第二の表面とした請求項10に記載の注出具。 A protrusion is formed that protrudes along the periphery of the opening,
The liquid repellent member is attached so as to be arranged around the protrusion, and constitutes a part of the tip.
The extraction tool according to claim 10, wherein the tip surface of the protrusion is the first surface, and the surface of the liquid repellent member is the second surface.
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JP6870342B2 (en) | 2021-05-12 |
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